{"title":"Drinking Water Filters","description":null,"products":[{"product_id":"water-filter-cartridge-melt-blown-sediment-2-5x10-1-micron","title":"Melt Blown Sediment Drinking Water Cartridge 1 Micron - 10\" x 2.5\" Slimline - MB2510-1","description":"\u003c!-- HASP-WFC :: FC-MB2510-1 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003eMelt Blown Sediment Drinking Water Cartridge — 1 Micron — 10\" x 2.5\" Slimline\u003c\/h3\u003e\n\u003cp\u003eA 1 micron melt blown sediment drinking water cartridge in the 10\" x 2.5\" Slimline size — 248mm long, 63–70mm outside diameter. Model \u003cstrong\u003eMB2510-1\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-MB2510-1\u003c\/strong\u003e. It drops straight into any housing built for a standard 2½\" x 9¾\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e248mm (nominal 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e63–70mm (nominal 2.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline (also written 2½\" x 9¾\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMelt Blown Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMB2510-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 2½\" x 9¾\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call this the standard 10 inch size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Slim Line #10 housings (158195 with 1\/2 inch NPT ports, 158005 with 3\/8 inch NPT) and 3G Standard Series housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater tanks, bores, dams and mains water. This is the standard first-stage sediment cartridge — the one that protects everything downstream of it, including UV steriliser quartz sleeves, carbon cartridges, RO membranes, solenoids and tap cartridges.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-MB2510-1 — model MB2510-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PX Series (polyspun graded-density sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePX011\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eP Series\u003c\/strong\u003e spun polypropylene in the 2.5 inch sizes, and the \u003cstrong\u003eDGD\u003c\/strong\u003e and \u003cstrong\u003eGD\u003c\/strong\u003e dual-gradient cartridges in Big Blue (DGD-2501-20, DGD-5005-20 \/ 155358-43, DGD-7525-20 \/ 155356-43, GD-5010-20BB \/ 555469-43, GD-7520-20BB \/ 555470-43). Note the DGD and GD cartridges are dual-rated (a coarse outer wrap over a finer core), so they are equivalent in duty and fit but not in single micron rating.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e10\" x 2.5\" Slimline\u003c\/strong\u003e — 248mm long, 63–70mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A Mornington townhouse on mains, twin under-sink manifold. The owner orders 20 inch cartridges because a forum told him they last twice as long. The vernier across the end cap reads 63.8mm and the tape reads 249mm — 10 inch x 2.5 inch. The 20 inch cartridge is 260mm too long for that sump and the cap will not thread back on with it in there.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 1 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-1-micron\"\u003eMB2520-1 — $17\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-1-micron\"\u003eMB4510-1 — $37\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-1-micron\"\u003eMB4520-1 — $68\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eFine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 10\" x 2.5\" Slimline size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 micron — this listing.\u003c\/strong\u003e Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-5-micron\"\u003e5 micron — MB2510-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-20-micron\"\u003e20 micron — MB2510-20\u003c\/a\u003e — Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-50-micron\"\u003e50 micron — MB2510-50\u003c\/a\u003e — Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat melt blown sediment media does\u003c\/h3\u003e\n\u003cp\u003eSpun polypropylene depth media, graded so the outer layers catch coarse particles and the core catches the fine ones. The cheapest way to get sediment out of a water line.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does nothing for chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-10-micron\"\u003eCB2510-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIt is not washable. Once it loads up it gets replaced — rinsing a melt blown cartridge just drives the trapped silt deeper into the core.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 10\" x 2.5\" Slimline housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x10-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-MB2510-1, model MB2510-1, Puretec PX011 equivalent, polyspun, spun poly, depth sediment. Also searched as 10 inch x 2.5 inch drinking water cartridge, slimline water filter cartridge, 10 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, melt blown sediment cartridge 1 micron, slimline replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-MB2510-1 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833035571389,"sku":"FC-MB2510-1","price":7.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/melt-blown-sediment-drinking-water-cartridge-1-micron-10-x-2-5-slimline-mb2510-filter-cartridges-317.webp?v=1785375666"},{"product_id":"water-filter-cartridge-melt-blown-sediment-2-5x10-50-micron","title":"Melt Blown Sediment Drinking Water Cartridge 50 Micron - 10\" x 2.5\" Slimline - MB2510-50","description":"\u003c!-- HASP-WFC :: FC-MB2510-50 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003eMelt Blown Sediment Drinking Water Cartridge — 50 Micron — 10\" x 2.5\" Slimline\u003c\/h3\u003e\n\u003cp\u003eA 50 micron melt blown sediment drinking water cartridge in the 10\" x 2.5\" Slimline size — 248mm long, 63–70mm outside diameter. Model \u003cstrong\u003eMB2510-50\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-MB2510-50\u003c\/strong\u003e. It drops straight into any housing built for a standard 2½\" x 9¾\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e248mm (nominal 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e63–70mm (nominal 2.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline (also written 2½\" x 9¾\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMelt Blown Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMB2510-50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 2½\" x 9¾\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call this the standard 10 inch size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Slim Line #10 housings (158195 with 1\/2 inch NPT ports, 158005 with 3\/8 inch NPT) and 3G Standard Series housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater tanks, bores, dams and mains water. This is the standard first-stage sediment cartridge — the one that protects everything downstream of it, including UV steriliser quartz sleeves, carbon cartridges, RO membranes, solenoids and tap cartridges.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-MB2510-50 — model MB2510-50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PX Series (polyspun graded-density sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePX501\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eP Series\u003c\/strong\u003e spun polypropylene in the 2.5 inch sizes, and the \u003cstrong\u003eDGD\u003c\/strong\u003e and \u003cstrong\u003eGD\u003c\/strong\u003e dual-gradient cartridges in Big Blue (DGD-2501-20, DGD-5005-20 \/ 155358-43, DGD-7525-20 \/ 155356-43, GD-5010-20BB \/ 555469-43, GD-7520-20BB \/ 555470-43). Note the DGD and GD cartridges are dual-rated (a coarse outer wrap over a finer core), so they are equivalent in duty and fit but not in single micron rating.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e10\" x 2.5\" Slimline\u003c\/strong\u003e — 248mm long, 63–70mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A Mornington townhouse on mains, twin under-sink manifold. The owner orders 20 inch cartridges because a forum told him they last twice as long. The vernier across the end cap reads 63.8mm and the tape reads 249mm — 10 inch x 2.5 inch. The 20 inch cartridge is 260mm too long for that sump and the cap will not thread back on with it in there.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 50 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-50-micron\"\u003eMB2520-50 — $17\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-50-micron\"\u003eMB4510-50 — $37\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-50-micron\"\u003eMB4520-50 — $68\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eCoarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 10\" x 2.5\" Slimline size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-1-micron\"\u003e1 micron — MB2510-1\u003c\/a\u003e — Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-5-micron\"\u003e5 micron — MB2510-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-20-micron\"\u003e20 micron — MB2510-20\u003c\/a\u003e — Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50 micron — this listing.\u003c\/strong\u003e Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat melt blown sediment media does\u003c\/h3\u003e\n\u003cp\u003eSpun polypropylene depth media, graded so the outer layers catch coarse particles and the core catches the fine ones. The cheapest way to get sediment out of a water line.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does nothing for chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-10-micron\"\u003eCB2510-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIt is not washable. Once it loads up it gets replaced — rinsing a melt blown cartridge just drives the trapped silt deeper into the core.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 10\" x 2.5\" Slimline housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x10-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-MB2510-50, model MB2510-50, Puretec PX501 equivalent, polyspun, spun poly, depth sediment. Also searched as 10 inch x 2.5 inch drinking water cartridge, slimline water filter cartridge, 10 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, melt blown sediment cartridge 50 micron, slimline replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-MB2510-50 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833035538621,"sku":"FC-MB2510-50","price":7.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/melt-blown-sediment-drinking-water-cartridge-50-micron-10-x-2-5-slimline-mb2510-filter-cartridges-606.webp?v=1785375668"},{"product_id":"water-filter-cartridge-melt-blown-sediment-2-5x10-20-micron","title":"Melt Blown Sediment Drinking Water Cartridge 20 Micron - 10\" x 2.5\" Slimline - MB2510-20","description":"\u003c!-- HASP-WFC :: FC-MB2510-20 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003eMelt Blown Sediment Drinking Water Cartridge — 20 Micron — 10\" x 2.5\" Slimline\u003c\/h3\u003e\n\u003cp\u003eA 20 micron melt blown sediment drinking water cartridge in the 10\" x 2.5\" Slimline size — 248mm long, 63–70mm outside diameter. Model \u003cstrong\u003eMB2510-20\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-MB2510-20\u003c\/strong\u003e. It drops straight into any housing built for a standard 2½\" x 9¾\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e248mm (nominal 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e63–70mm (nominal 2.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline (also written 2½\" x 9¾\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMelt Blown Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMB2510-20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 2½\" x 9¾\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call this the standard 10 inch size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Slim Line #10 housings (158195 with 1\/2 inch NPT ports, 158005 with 3\/8 inch NPT) and 3G Standard Series housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater tanks, bores, dams and mains water. This is the standard first-stage sediment cartridge — the one that protects everything downstream of it, including UV steriliser quartz sleeves, carbon cartridges, RO membranes, solenoids and tap cartridges.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-MB2510-20 — model MB2510-20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PX Series (polyspun graded-density sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePX201\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eP Series\u003c\/strong\u003e spun polypropylene in the 2.5 inch sizes, and the \u003cstrong\u003eDGD\u003c\/strong\u003e and \u003cstrong\u003eGD\u003c\/strong\u003e dual-gradient cartridges in Big Blue (DGD-2501-20, DGD-5005-20 \/ 155358-43, DGD-7525-20 \/ 155356-43, GD-5010-20BB \/ 555469-43, GD-7520-20BB \/ 555470-43). Note the DGD and GD cartridges are dual-rated (a coarse outer wrap over a finer core), so they are equivalent in duty and fit but not in single micron rating.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e10\" x 2.5\" Slimline\u003c\/strong\u003e — 248mm long, 63–70mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A Mornington townhouse on mains, twin under-sink manifold. The owner orders 20 inch cartridges because a forum told him they last twice as long. The vernier across the end cap reads 63.8mm and the tape reads 249mm — 10 inch x 2.5 inch. The 20 inch cartridge is 260mm too long for that sump and the cap will not thread back on with it in there.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 20 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-20-micron\"\u003eMB2520-20 — $17\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-20-micron\"\u003eMB4510-20 — $37\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-20-micron\"\u003eMB4520-20 — $68\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eVisible grit and sand. A good first stage on tank or bore water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 10\" x 2.5\" Slimline size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-1-micron\"\u003e1 micron — MB2510-1\u003c\/a\u003e — Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-5-micron\"\u003e5 micron — MB2510-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 micron — this listing.\u003c\/strong\u003e Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-50-micron\"\u003e50 micron — MB2510-50\u003c\/a\u003e — Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat melt blown sediment media does\u003c\/h3\u003e\n\u003cp\u003eSpun polypropylene depth media, graded so the outer layers catch coarse particles and the core catches the fine ones. The cheapest way to get sediment out of a water line.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does nothing for chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-10-micron\"\u003eCB2510-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIt is not washable. Once it loads up it gets replaced — rinsing a melt blown cartridge just drives the trapped silt deeper into the core.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 10\" x 2.5\" Slimline housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x10-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-MB2510-20, model MB2510-20, Puretec PX201 equivalent, polyspun, spun poly, depth sediment. Also searched as 10 inch x 2.5 inch drinking water cartridge, slimline water filter cartridge, 10 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, melt blown sediment cartridge 20 micron, slimline replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-MB2510-20 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833035636925,"sku":"FC-MB2510-20","price":7.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/melt-blown-sediment-drinking-water-cartridge-20-micron-10-x-2-5-slimline-mb2510-filter-cartridges-595.webp?v=1785375672"},{"product_id":"water-filter-cartridge-melt-blown-sediment-2-5x10-5-micron","title":"Melt Blown Sediment Drinking Water Cartridge 5 Micron - 10\" x 2.5\" Slimline - MB2510-5","description":"\u003c!-- HASP-WFC :: FC-MB2510-5 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003eMelt Blown Sediment Drinking Water Cartridge — 5 Micron — 10\" x 2.5\" Slimline\u003c\/h3\u003e\n\u003cp\u003eA 5 micron melt blown sediment drinking water cartridge in the 10\" x 2.5\" Slimline size — 248mm long, 63–70mm outside diameter. Model \u003cstrong\u003eMB2510-5\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-MB2510-5\u003c\/strong\u003e. It drops straight into any housing built for a standard 2½\" x 9¾\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e248mm (nominal 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e63–70mm (nominal 2.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline (also written 2½\" x 9¾\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMelt Blown Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMB2510-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 2½\" x 9¾\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call this the standard 10 inch size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Slim Line #10 housings (158195 with 1\/2 inch NPT ports, 158005 with 3\/8 inch NPT) and 3G Standard Series housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater tanks, bores, dams and mains water. This is the standard first-stage sediment cartridge — the one that protects everything downstream of it, including UV steriliser quartz sleeves, carbon cartridges, RO membranes, solenoids and tap cartridges.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-MB2510-5 — model MB2510-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PX Series (polyspun graded-density sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePX051\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eP Series\u003c\/strong\u003e spun polypropylene in the 2.5 inch sizes, and the \u003cstrong\u003eDGD\u003c\/strong\u003e and \u003cstrong\u003eGD\u003c\/strong\u003e dual-gradient cartridges in Big Blue (DGD-2501-20, DGD-5005-20 \/ 155358-43, DGD-7525-20 \/ 155356-43, GD-5010-20BB \/ 555469-43, GD-7520-20BB \/ 555470-43). Note the DGD and GD cartridges are dual-rated (a coarse outer wrap over a finer core), so they are equivalent in duty and fit but not in single micron rating.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e10\" x 2.5\" Slimline\u003c\/strong\u003e — 248mm long, 63–70mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A Mornington townhouse on mains, twin under-sink manifold. The owner orders 20 inch cartridges because a forum told him they last twice as long. The vernier across the end cap reads 63.8mm and the tape reads 249mm — 10 inch x 2.5 inch. The 20 inch cartridge is 260mm too long for that sump and the cap will not thread back on with it in there.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 5 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-5-micron\"\u003eMB2520-5 — $17\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-5-micron\"\u003eMB4510-5 — $37\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-5-micron\"\u003eMB4520-5 — $68\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eThe general-purpose rating. Mains water and reasonably clean tank water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 10\" x 2.5\" Slimline size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-1-micron\"\u003e1 micron — MB2510-1\u003c\/a\u003e — Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5 micron — this listing.\u003c\/strong\u003e The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-20-micron\"\u003e20 micron — MB2510-20\u003c\/a\u003e — Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-50-micron\"\u003e50 micron — MB2510-50\u003c\/a\u003e — Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat melt blown sediment media does\u003c\/h3\u003e\n\u003cp\u003eSpun polypropylene depth media, graded so the outer layers catch coarse particles and the core catches the fine ones. The cheapest way to get sediment out of a water line.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does nothing for chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-10-micron\"\u003eCB2510-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIt is not washable. Once it loads up it gets replaced — rinsing a melt blown cartridge just drives the trapped silt deeper into the core.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 10\" x 2.5\" Slimline housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x10-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-MB2510-5, model MB2510-5, Puretec PX051 equivalent, polyspun, spun poly, depth sediment. Also searched as 10 inch x 2.5 inch drinking water cartridge, slimline water filter cartridge, 10 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, melt blown sediment cartridge 5 micron, slimline replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-MB2510-5 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833035604157,"sku":"FC-MB2510-5","price":7.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/melt-blown-sediment-drinking-water-cartridge-5-micron-10-x-2-slimline-mb2510-filter-cartridges-559.webp?v=1785375673"},{"product_id":"water-filter-cartridge-melt-blown-sediment-2-5x20-1-micron","title":"Melt Blown Sediment Drinking Water Cartridge 1 Micron - 20\" x 2.5\" Slimline - MB2520-1","description":"\u003c!-- HASP-WFC :: FC-MB2520-1 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003eMelt Blown Sediment Drinking Water Cartridge — 1 Micron — 20\" x 2.5\" Slimline\u003c\/h3\u003e\n\u003cp\u003eA 1 micron melt blown sediment drinking water cartridge in the 20\" x 2.5\" Slimline size — 508mm long, 63–70mm outside diameter. Model \u003cstrong\u003eMB2520-1\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-MB2520-1\u003c\/strong\u003e. It drops straight into any housing built for a standard 2½\" x 20\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e508mm (nominal 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e63–70mm (nominal 2.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline (also written 2½\" x 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMelt Blown Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMB2520-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 2½\" x 20\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call this the 20 inch slimline size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — #20 Slim Line and 3G Standard Series housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater tanks, bores, dams and mains water. This is the standard first-stage sediment cartridge — the one that protects everything downstream of it, including UV steriliser quartz sleeves, carbon cartridges, RO membranes, solenoids and tap cartridges.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-MB2520-1 — model MB2520-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PX Series (polyspun graded-density sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePX012\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eP Series\u003c\/strong\u003e spun polypropylene in the 2.5 inch sizes, and the \u003cstrong\u003eDGD\u003c\/strong\u003e and \u003cstrong\u003eGD\u003c\/strong\u003e dual-gradient cartridges in Big Blue (DGD-2501-20, DGD-5005-20 \/ 155358-43, DGD-7525-20 \/ 155356-43, GD-5010-20BB \/ 555469-43, GD-7520-20BB \/ 555470-43). Note the DGD and GD cartridges are dual-rated (a coarse outer wrap over a finer core), so they are equivalent in duty and fit but not in single micron rating.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e20\" x 2.5\" Slimline\u003c\/strong\u003e — 508mm long, 63–70mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A tank-fed house at Pearcedale, VIC. Through the clear sump the cartridge looks slim, so the owner orders a 10 inch. The vernier across the end cap reads 64.1mm — slimline, correct — but the tape reads 505mm. It was a 20 inch slimline all along. The 10 inch would have sat in the bottom of the sump with about 260mm of open water above it, and everything would have run straight past the media unfiltered.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 1 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-1-micron\"\u003eMB2510-1 — $7\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-1-micron\"\u003eMB4510-1 — $37\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-1-micron\"\u003eMB4520-1 — $68\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eFine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 20\" x 2.5\" Slimline size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 micron — this listing.\u003c\/strong\u003e Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-5-micron\"\u003e5 micron — MB2520-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-20-micron\"\u003e20 micron — MB2520-20\u003c\/a\u003e — Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-50-micron\"\u003e50 micron — MB2520-50\u003c\/a\u003e — Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat melt blown sediment media does\u003c\/h3\u003e\n\u003cp\u003eSpun polypropylene depth media, graded so the outer layers catch coarse particles and the core catches the fine ones. The cheapest way to get sediment out of a water line.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does nothing for chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-10-micron\"\u003eCB2520-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIt is not washable. Once it loads up it gets replaced — rinsing a melt blown cartridge just drives the trapped silt deeper into the core.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 20\" x 2.5\" Slimline housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x20-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-MB2520-1, model MB2520-1, Puretec PX012 equivalent, polyspun, spun poly, depth sediment. Also searched as 20 inch x 2.5 inch drinking water cartridge, slimline water filter cartridge, 20 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, melt blown sediment cartridge 1 micron, slimline replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-MB2520-1 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833043861693,"sku":"FC-MB2520-1","price":17.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/melt-blown-sediment-drinking-water-cartridge-1-micron-20-x-2-5-slimline-mb2520-filter-cartridges-400.webp?v=1785375678"},{"product_id":"water-filter-cartridge-melt-blown-sediment-2-5x20-5-micron","title":"Melt Blown Sediment Drinking Water Cartridge 5 Micron - 20\" x 2.5\" Slimline - MB2520-5","description":"\u003c!-- HASP-WFC :: FC-MB2520-5 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003eMelt Blown Sediment Drinking Water Cartridge — 5 Micron — 20\" x 2.5\" Slimline\u003c\/h3\u003e\n\u003cp\u003eA 5 micron melt blown sediment drinking water cartridge in the 20\" x 2.5\" Slimline size — 508mm long, 63–70mm outside diameter. Model \u003cstrong\u003eMB2520-5\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-MB2520-5\u003c\/strong\u003e. It drops straight into any housing built for a standard 2½\" x 20\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e508mm (nominal 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e63–70mm (nominal 2.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline (also written 2½\" x 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMelt Blown Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMB2520-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 2½\" x 20\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call this the 20 inch slimline size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — #20 Slim Line and 3G Standard Series housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater tanks, bores, dams and mains water. This is the standard first-stage sediment cartridge — the one that protects everything downstream of it, including UV steriliser quartz sleeves, carbon cartridges, RO membranes, solenoids and tap cartridges.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-MB2520-5 — model MB2520-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PX Series (polyspun graded-density sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePX052\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eP Series\u003c\/strong\u003e spun polypropylene in the 2.5 inch sizes, and the \u003cstrong\u003eDGD\u003c\/strong\u003e and \u003cstrong\u003eGD\u003c\/strong\u003e dual-gradient cartridges in Big Blue (DGD-2501-20, DGD-5005-20 \/ 155358-43, DGD-7525-20 \/ 155356-43, GD-5010-20BB \/ 555469-43, GD-7520-20BB \/ 555470-43). Note the DGD and GD cartridges are dual-rated (a coarse outer wrap over a finer core), so they are equivalent in duty and fit but not in single micron rating.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e20\" x 2.5\" Slimline\u003c\/strong\u003e — 508mm long, 63–70mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A tank-fed house at Pearcedale, VIC. Through the clear sump the cartridge looks slim, so the owner orders a 10 inch. The vernier across the end cap reads 64.1mm — slimline, correct — but the tape reads 505mm. It was a 20 inch slimline all along. The 10 inch would have sat in the bottom of the sump with about 260mm of open water above it, and everything would have run straight past the media unfiltered.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 5 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-5-micron\"\u003eMB2510-5 — $7\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-5-micron\"\u003eMB4510-5 — $37\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-5-micron\"\u003eMB4520-5 — $68\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eThe general-purpose rating. Mains water and reasonably clean tank water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 20\" x 2.5\" Slimline size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-1-micron\"\u003e1 micron — MB2520-1\u003c\/a\u003e — Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5 micron — this listing.\u003c\/strong\u003e The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-20-micron\"\u003e20 micron — MB2520-20\u003c\/a\u003e — Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-50-micron\"\u003e50 micron — MB2520-50\u003c\/a\u003e — Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat melt blown sediment media does\u003c\/h3\u003e\n\u003cp\u003eSpun polypropylene depth media, graded so the outer layers catch coarse particles and the core catches the fine ones. The cheapest way to get sediment out of a water line.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does nothing for chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-10-micron\"\u003eCB2520-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIt is not washable. Once it loads up it gets replaced — rinsing a melt blown cartridge just drives the trapped silt deeper into the core.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 20\" x 2.5\" Slimline housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x20-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-MB2520-5, model MB2520-5, Puretec PX052 equivalent, polyspun, spun poly, depth sediment. Also searched as 20 inch x 2.5 inch drinking water cartridge, slimline water filter cartridge, 20 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, melt blown sediment cartridge 5 micron, slimline replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-MB2520-5 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833043894461,"sku":"FC-MB2520-5","price":17.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/melt-blown-sediment-drinking-water-cartridge-5-micron-20-x-2-slimline-mb2520-filter-cartridges-623.webp?v=1785375681"},{"product_id":"water-filter-cartridge-melt-blown-sediment-2-5x20-20-micron","title":"Melt Blown Sediment Drinking Water Cartridge 20 Micron - 20\" x 2.5\" Slimline - MB2520-20","description":"\u003c!-- HASP-WFC :: FC-MB2520-20 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003eMelt Blown Sediment Drinking Water Cartridge — 20 Micron — 20\" x 2.5\" Slimline\u003c\/h3\u003e\n\u003cp\u003eA 20 micron melt blown sediment drinking water cartridge in the 20\" x 2.5\" Slimline size — 508mm long, 63–70mm outside diameter. Model \u003cstrong\u003eMB2520-20\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-MB2520-20\u003c\/strong\u003e. It drops straight into any housing built for a standard 2½\" x 20\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e508mm (nominal 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e63–70mm (nominal 2.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline (also written 2½\" x 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMelt Blown Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMB2520-20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 2½\" x 20\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call this the 20 inch slimline size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — #20 Slim Line and 3G Standard Series housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater tanks, bores, dams and mains water. This is the standard first-stage sediment cartridge — the one that protects everything downstream of it, including UV steriliser quartz sleeves, carbon cartridges, RO membranes, solenoids and tap cartridges.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-MB2520-20 — model MB2520-20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PX Series (polyspun graded-density sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePX202\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eP Series\u003c\/strong\u003e spun polypropylene in the 2.5 inch sizes, and the \u003cstrong\u003eDGD\u003c\/strong\u003e and \u003cstrong\u003eGD\u003c\/strong\u003e dual-gradient cartridges in Big Blue (DGD-2501-20, DGD-5005-20 \/ 155358-43, DGD-7525-20 \/ 155356-43, GD-5010-20BB \/ 555469-43, GD-7520-20BB \/ 555470-43). Note the DGD and GD cartridges are dual-rated (a coarse outer wrap over a finer core), so they are equivalent in duty and fit but not in single micron rating.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e20\" x 2.5\" Slimline\u003c\/strong\u003e — 508mm long, 63–70mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A tank-fed house at Pearcedale, VIC. Through the clear sump the cartridge looks slim, so the owner orders a 10 inch. The vernier across the end cap reads 64.1mm — slimline, correct — but the tape reads 505mm. It was a 20 inch slimline all along. The 10 inch would have sat in the bottom of the sump with about 260mm of open water above it, and everything would have run straight past the media unfiltered.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 20 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-20-micron\"\u003eMB2510-20 — $7\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-20-micron\"\u003eMB4510-20 — $37\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-20-micron\"\u003eMB4520-20 — $68\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eVisible grit and sand. A good first stage on tank or bore water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 20\" x 2.5\" Slimline size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-1-micron\"\u003e1 micron — MB2520-1\u003c\/a\u003e — Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-5-micron\"\u003e5 micron — MB2520-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 micron — this listing.\u003c\/strong\u003e Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-50-micron\"\u003e50 micron — MB2520-50\u003c\/a\u003e — Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat melt blown sediment media does\u003c\/h3\u003e\n\u003cp\u003eSpun polypropylene depth media, graded so the outer layers catch coarse particles and the core catches the fine ones. The cheapest way to get sediment out of a water line.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does nothing for chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-10-micron\"\u003eCB2520-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIt is not washable. Once it loads up it gets replaced — rinsing a melt blown cartridge just drives the trapped silt deeper into the core.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 20\" x 2.5\" Slimline housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x20-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-MB2520-20, model MB2520-20, Puretec PX202 equivalent, polyspun, spun poly, depth sediment. Also searched as 20 inch x 2.5 inch drinking water cartridge, slimline water filter cartridge, 20 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, melt blown sediment cartridge 20 micron, slimline replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-MB2520-20 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833043927229,"sku":"FC-MB2520-20","price":17.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/melt-blown-sediment-drinking-water-cartridge-20-micron-x-2-5-slimline-mb2520-filter-cartridges-612.webp?v=1785375675"},{"product_id":"water-filter-cartridge-melt-blown-sediment-2-5x20-50-micron","title":"Melt Blown Sediment Drinking Water Cartridge 50 Micron - 20\" x 2.5\" Slimline - MB2520-50","description":"\u003c!-- HASP-WFC :: FC-MB2520-50 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003eMelt Blown Sediment Drinking Water Cartridge — 50 Micron — 20\" x 2.5\" Slimline\u003c\/h3\u003e\n\u003cp\u003eA 50 micron melt blown sediment drinking water cartridge in the 20\" x 2.5\" Slimline size — 508mm long, 63–70mm outside diameter. Model \u003cstrong\u003eMB2520-50\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-MB2520-50\u003c\/strong\u003e. It drops straight into any housing built for a standard 2½\" x 20\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e508mm (nominal 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e63–70mm (nominal 2.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline (also written 2½\" x 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMelt Blown Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMB2520-50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 2½\" x 20\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call this the 20 inch slimline size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — #20 Slim Line and 3G Standard Series housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater tanks, bores, dams and mains water. This is the standard first-stage sediment cartridge — the one that protects everything downstream of it, including UV steriliser quartz sleeves, carbon cartridges, RO membranes, solenoids and tap cartridges.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-MB2520-50 — model MB2520-50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PX Series (polyspun graded-density sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePX502\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eP Series\u003c\/strong\u003e spun polypropylene in the 2.5 inch sizes, and the \u003cstrong\u003eDGD\u003c\/strong\u003e and \u003cstrong\u003eGD\u003c\/strong\u003e dual-gradient cartridges in Big Blue (DGD-2501-20, DGD-5005-20 \/ 155358-43, DGD-7525-20 \/ 155356-43, GD-5010-20BB \/ 555469-43, GD-7520-20BB \/ 555470-43). Note the DGD and GD cartridges are dual-rated (a coarse outer wrap over a finer core), so they are equivalent in duty and fit but not in single micron rating.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e20\" x 2.5\" Slimline\u003c\/strong\u003e — 508mm long, 63–70mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A tank-fed house at Pearcedale, VIC. Through the clear sump the cartridge looks slim, so the owner orders a 10 inch. The vernier across the end cap reads 64.1mm — slimline, correct — but the tape reads 505mm. It was a 20 inch slimline all along. The 10 inch would have sat in the bottom of the sump with about 260mm of open water above it, and everything would have run straight past the media unfiltered.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 50 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-50-micron\"\u003eMB2510-50 — $7\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-50-micron\"\u003eMB4510-50 — $37\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-50-micron\"\u003eMB4520-50 — $68\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eCoarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 20\" x 2.5\" Slimline size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-1-micron\"\u003e1 micron — MB2520-1\u003c\/a\u003e — Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-5-micron\"\u003e5 micron — MB2520-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-20-micron\"\u003e20 micron — MB2520-20\u003c\/a\u003e — Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50 micron — this listing.\u003c\/strong\u003e Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat melt blown sediment media does\u003c\/h3\u003e\n\u003cp\u003eSpun polypropylene depth media, graded so the outer layers catch coarse particles and the core catches the fine ones. The cheapest way to get sediment out of a water line.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does nothing for chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-10-micron\"\u003eCB2520-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIt is not washable. Once it loads up it gets replaced — rinsing a melt blown cartridge just drives the trapped silt deeper into the core.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 20\" x 2.5\" Slimline housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x20-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-MB2520-50, model MB2520-50, Puretec PX502 equivalent, polyspun, spun poly, depth sediment. Also searched as 20 inch x 2.5 inch drinking water cartridge, slimline water filter cartridge, 20 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, melt blown sediment cartridge 50 micron, slimline replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-MB2520-50 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833043959997,"sku":"FC-MB2520-50","price":17.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/melt-blown-sediment-drinking-water-cartridge-50-micron-20-x-2-5-slimline-mb2520-filter-cartridges-434.webp?v=1785375680"},{"product_id":"water-filter-cartridge-melt-blown-sediment-4-5x10-1-micron","title":"Melt Blown Sediment Drinking Water Cartridge 1 Micron - 10\" x 4.5\" Big Blue - MB4510-1","description":"\u003c!-- HASP-WFC :: FC-MB4510-1 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003eMelt Blown Sediment Drinking Water Cartridge — 1 Micron — 10\" x 4.5\" Big Blue\u003c\/h3\u003e\n\u003cp\u003eA 1 micron melt blown sediment drinking water cartridge in the 10\" x 4.5\" Big Blue size — 248mm long, 114mm outside diameter. Model \u003cstrong\u003eMB4510-1\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-MB4510-1\u003c\/strong\u003e. It drops straight into any housing built for a standard 4½\" x 9¾\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e248mm (nominal 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e114mm (nominal 4.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue (also written 4½\" x 9¾\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMelt Blown Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMB4510-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 4½\" x 9¾\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call the 4.5 inch format \u003cstrong\u003eMaxiPlus\u003c\/strong\u003e, so a MaxiPlus 10 housing takes this cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Big Blue 10 inch housings, 3\/4 inch and 1 inch FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater tanks, bores, dams and mains water. This is the standard first-stage sediment cartridge — the one that protects everything downstream of it, including UV steriliser quartz sleeves, carbon cartridges, RO membranes, solenoids and tap cartridges.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-MB4510-1 — model MB4510-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PX Series (polyspun graded-density sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePX01MP1\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eP Series\u003c\/strong\u003e spun polypropylene in the 2.5 inch sizes, and the \u003cstrong\u003eDGD\u003c\/strong\u003e and \u003cstrong\u003eGD\u003c\/strong\u003e dual-gradient cartridges in Big Blue (DGD-2501-20, DGD-5005-20 \/ 155358-43, DGD-7525-20 \/ 155356-43, GD-5010-20BB \/ 555469-43, GD-7520-20BB \/ 555470-43). Note the DGD and GD cartridges are dual-rated (a coarse outer wrap over a finer core), so they are equivalent in duty and fit but not in single micron rating.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e10\" x 4.5\" Big Blue\u003c\/strong\u003e — 248mm long, 114mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A rainwater line at Officer, VIC, feeding the house and a WWDG swim spa fill point. The cartridge is a squat blue drum, nothing like a slimline. The vernier across the end cap reads 113.6mm and the tape reads 250mm — 10 inch x 4.5 inch, a Big Blue 10. Drop a slimline cartridge into that housing and it sits in a 25mm annular gap all the way around, so most of the water walks straight past the media.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 1 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-1-micron\"\u003eMB2510-1 — $7\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-1-micron\"\u003eMB2520-1 — $17\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-1-micron\"\u003eMB4520-1 — $68\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eFine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 10\" x 4.5\" Big Blue size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 micron — this listing.\u003c\/strong\u003e Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-5-micron\"\u003e5 micron — MB4510-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-20-micron\"\u003e20 micron — MB4510-20\u003c\/a\u003e — Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-50-micron\"\u003e50 micron — MB4510-50\u003c\/a\u003e — Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat melt blown sediment media does\u003c\/h3\u003e\n\u003cp\u003eSpun polypropylene depth media, graded so the outer layers catch coarse particles and the core catches the fine ones. The cheapest way to get sediment out of a water line.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does nothing for chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-10-micron\"\u003eCB4510-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIt is not washable. Once it loads up it gets replaced — rinsing a melt blown cartridge just drives the trapped silt deeper into the core.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 10\" x 4.5\" Big Blue housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x10-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-MB4510-1, model MB4510-1, Puretec PX01MP1 equivalent, polyspun, spun poly, depth sediment. Also searched as 10 inch x 4.5 inch drinking water cartridge, big blue water filter cartridge, 10 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, melt blown sediment cartridge 1 micron, big blue replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-MB4510-1 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833052217533,"sku":"FC-MB4510-1","price":37.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/melt-blown-sediment-drinking-water-cartridge-1-micron-10-x-4-5-big-blue-mb4510-filter-cartridges-507.webp?v=1785375683"},{"product_id":"water-filter-cartridge-melt-blown-sediment-4-5x10-5-micron","title":"Melt Blown Sediment Drinking Water Cartridge 5 Micron - 10\" x 4.5\" Big Blue - MB4510-5","description":"\u003c!-- HASP-WFC :: FC-MB4510-5 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003eMelt Blown Sediment Drinking Water Cartridge — 5 Micron — 10\" x 4.5\" Big Blue\u003c\/h3\u003e\n\u003cp\u003eA 5 micron melt blown sediment drinking water cartridge in the 10\" x 4.5\" Big Blue size — 248mm long, 114mm outside diameter. Model \u003cstrong\u003eMB4510-5\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-MB4510-5\u003c\/strong\u003e. It drops straight into any housing built for a standard 4½\" x 9¾\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e248mm (nominal 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e114mm (nominal 4.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue (also written 4½\" x 9¾\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMelt Blown Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMB4510-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 4½\" x 9¾\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call the 4.5 inch format \u003cstrong\u003eMaxiPlus\u003c\/strong\u003e, so a MaxiPlus 10 housing takes this cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Big Blue 10 inch housings, 3\/4 inch and 1 inch FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater tanks, bores, dams and mains water. This is the standard first-stage sediment cartridge — the one that protects everything downstream of it, including UV steriliser quartz sleeves, carbon cartridges, RO membranes, solenoids and tap cartridges.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-MB4510-5 — model MB4510-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PX Series (polyspun graded-density sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePX05MP1\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eP Series\u003c\/strong\u003e spun polypropylene in the 2.5 inch sizes, and the \u003cstrong\u003eDGD\u003c\/strong\u003e and \u003cstrong\u003eGD\u003c\/strong\u003e dual-gradient cartridges in Big Blue (DGD-2501-20, DGD-5005-20 \/ 155358-43, DGD-7525-20 \/ 155356-43, GD-5010-20BB \/ 555469-43, GD-7520-20BB \/ 555470-43). Note the DGD and GD cartridges are dual-rated (a coarse outer wrap over a finer core), so they are equivalent in duty and fit but not in single micron rating.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e10\" x 4.5\" Big Blue\u003c\/strong\u003e — 248mm long, 114mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A rainwater line at Officer, VIC, feeding the house and a WWDG swim spa fill point. The cartridge is a squat blue drum, nothing like a slimline. The vernier across the end cap reads 113.6mm and the tape reads 250mm — 10 inch x 4.5 inch, a Big Blue 10. Drop a slimline cartridge into that housing and it sits in a 25mm annular gap all the way around, so most of the water walks straight past the media.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 5 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-5-micron\"\u003eMB2510-5 — $7\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-5-micron\"\u003eMB2520-5 — $17\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-5-micron\"\u003eMB4520-5 — $68\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eThe general-purpose rating. Mains water and reasonably clean tank water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 10\" x 4.5\" Big Blue size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-1-micron\"\u003e1 micron — MB4510-1\u003c\/a\u003e — Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5 micron — this listing.\u003c\/strong\u003e The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-20-micron\"\u003e20 micron — MB4510-20\u003c\/a\u003e — Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-50-micron\"\u003e50 micron — MB4510-50\u003c\/a\u003e — Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat melt blown sediment media does\u003c\/h3\u003e\n\u003cp\u003eSpun polypropylene depth media, graded so the outer layers catch coarse particles and the core catches the fine ones. The cheapest way to get sediment out of a water line.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does nothing for chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-10-micron\"\u003eCB4510-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIt is not washable. Once it loads up it gets replaced — rinsing a melt blown cartridge just drives the trapped silt deeper into the core.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 10\" x 4.5\" Big Blue housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x10-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-MB4510-5, model MB4510-5, Puretec PX05MP1 equivalent, polyspun, spun poly, depth sediment. Also searched as 10 inch x 4.5 inch drinking water cartridge, big blue water filter cartridge, 10 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, melt blown sediment cartridge 5 micron, big blue replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-MB4510-5 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833052250301,"sku":"FC-MB4510-5","price":37.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/melt-blown-sediment-drinking-water-cartridge-5-micron-10-x-4-big-blue-mb4510-filter-cartridges-390.webp?v=1785375685"},{"product_id":"water-filter-cartridge-melt-blown-sediment-4-5x10-20-micron","title":"Melt Blown Sediment Drinking Water Cartridge 20 Micron - 10\" x 4.5\" Big Blue - MB4510-20","description":"\u003c!-- HASP-WFC :: FC-MB4510-20 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003eMelt Blown Sediment Drinking Water Cartridge — 20 Micron — 10\" x 4.5\" Big Blue\u003c\/h3\u003e\n\u003cp\u003eA 20 micron melt blown sediment drinking water cartridge in the 10\" x 4.5\" Big Blue size — 248mm long, 114mm outside diameter. Model \u003cstrong\u003eMB4510-20\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-MB4510-20\u003c\/strong\u003e. It drops straight into any housing built for a standard 4½\" x 9¾\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e248mm (nominal 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e114mm (nominal 4.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue (also written 4½\" x 9¾\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMelt Blown Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMB4510-20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 4½\" x 9¾\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call the 4.5 inch format \u003cstrong\u003eMaxiPlus\u003c\/strong\u003e, so a MaxiPlus 10 housing takes this cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Big Blue 10 inch housings, 3\/4 inch and 1 inch FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater tanks, bores, dams and mains water. This is the standard first-stage sediment cartridge — the one that protects everything downstream of it, including UV steriliser quartz sleeves, carbon cartridges, RO membranes, solenoids and tap cartridges.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-MB4510-20 — model MB4510-20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PX Series (polyspun graded-density sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePX20MP1\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eP Series\u003c\/strong\u003e spun polypropylene in the 2.5 inch sizes, and the \u003cstrong\u003eDGD\u003c\/strong\u003e and \u003cstrong\u003eGD\u003c\/strong\u003e dual-gradient cartridges in Big Blue (DGD-2501-20, DGD-5005-20 \/ 155358-43, DGD-7525-20 \/ 155356-43, GD-5010-20BB \/ 555469-43, GD-7520-20BB \/ 555470-43). Note the DGD and GD cartridges are dual-rated (a coarse outer wrap over a finer core), so they are equivalent in duty and fit but not in single micron rating.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e10\" x 4.5\" Big Blue\u003c\/strong\u003e — 248mm long, 114mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A rainwater line at Officer, VIC, feeding the house and a WWDG swim spa fill point. The cartridge is a squat blue drum, nothing like a slimline. The vernier across the end cap reads 113.6mm and the tape reads 250mm — 10 inch x 4.5 inch, a Big Blue 10. Drop a slimline cartridge into that housing and it sits in a 25mm annular gap all the way around, so most of the water walks straight past the media.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 20 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-20-micron\"\u003eMB2510-20 — $7\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-20-micron\"\u003eMB2520-20 — $17\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-20-micron\"\u003eMB4520-20 — $68\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eVisible grit and sand. A good first stage on tank or bore water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 10\" x 4.5\" Big Blue size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-1-micron\"\u003e1 micron — MB4510-1\u003c\/a\u003e — Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-5-micron\"\u003e5 micron — MB4510-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 micron — this listing.\u003c\/strong\u003e Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-50-micron\"\u003e50 micron — MB4510-50\u003c\/a\u003e — Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat melt blown sediment media does\u003c\/h3\u003e\n\u003cp\u003eSpun polypropylene depth media, graded so the outer layers catch coarse particles and the core catches the fine ones. The cheapest way to get sediment out of a water line.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does nothing for chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-10-micron\"\u003eCB4510-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIt is not washable. Once it loads up it gets replaced — rinsing a melt blown cartridge just drives the trapped silt deeper into the core.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 10\" x 4.5\" Big Blue housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x10-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-MB4510-20, model MB4510-20, Puretec PX20MP1 equivalent, polyspun, spun poly, depth sediment. Also searched as 10 inch x 4.5 inch drinking water cartridge, big blue water filter cartridge, 10 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, melt blown sediment cartridge 20 micron, big blue replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-MB4510-20 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833052283069,"sku":"FC-MB4510-20","price":37.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/melt-blown-sediment-drinking-water-cartridge-20-micron-10-x-4-5-big-blue-mb4510-filter-cartridges-134.webp?v=1785375685"},{"product_id":"water-filter-cartridge-melt-blown-sediment-4-5x10-50-micron","title":"Melt Blown Sediment Drinking Water Cartridge 50 Micron - 10\" x 4.5\" Big Blue - MB4510-50","description":"\u003c!-- HASP-WFC :: FC-MB4510-50 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003eMelt Blown Sediment Drinking Water Cartridge — 50 Micron — 10\" x 4.5\" Big Blue\u003c\/h3\u003e\n\u003cp\u003eA 50 micron melt blown sediment drinking water cartridge in the 10\" x 4.5\" Big Blue size — 248mm long, 114mm outside diameter. Model \u003cstrong\u003eMB4510-50\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-MB4510-50\u003c\/strong\u003e. It drops straight into any housing built for a standard 4½\" x 9¾\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e248mm (nominal 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e114mm (nominal 4.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue (also written 4½\" x 9¾\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMelt Blown Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMB4510-50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 4½\" x 9¾\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call the 4.5 inch format \u003cstrong\u003eMaxiPlus\u003c\/strong\u003e, so a MaxiPlus 10 housing takes this cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Big Blue 10 inch housings, 3\/4 inch and 1 inch FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater tanks, bores, dams and mains water. This is the standard first-stage sediment cartridge — the one that protects everything downstream of it, including UV steriliser quartz sleeves, carbon cartridges, RO membranes, solenoids and tap cartridges.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-MB4510-50 — model MB4510-50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PX Series (polyspun graded-density sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePX50MP1\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eP Series\u003c\/strong\u003e spun polypropylene in the 2.5 inch sizes, and the \u003cstrong\u003eDGD\u003c\/strong\u003e and \u003cstrong\u003eGD\u003c\/strong\u003e dual-gradient cartridges in Big Blue (DGD-2501-20, DGD-5005-20 \/ 155358-43, DGD-7525-20 \/ 155356-43, GD-5010-20BB \/ 555469-43, GD-7520-20BB \/ 555470-43). Note the DGD and GD cartridges are dual-rated (a coarse outer wrap over a finer core), so they are equivalent in duty and fit but not in single micron rating.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e10\" x 4.5\" Big Blue\u003c\/strong\u003e — 248mm long, 114mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A rainwater line at Officer, VIC, feeding the house and a WWDG swim spa fill point. The cartridge is a squat blue drum, nothing like a slimline. The vernier across the end cap reads 113.6mm and the tape reads 250mm — 10 inch x 4.5 inch, a Big Blue 10. Drop a slimline cartridge into that housing and it sits in a 25mm annular gap all the way around, so most of the water walks straight past the media.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 50 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-50-micron\"\u003eMB2510-50 — $7\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-50-micron\"\u003eMB2520-50 — $17\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-50-micron\"\u003eMB4520-50 — $68\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eCoarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 10\" x 4.5\" Big Blue size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-1-micron\"\u003e1 micron — MB4510-1\u003c\/a\u003e — Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-5-micron\"\u003e5 micron — MB4510-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-20-micron\"\u003e20 micron — MB4510-20\u003c\/a\u003e — Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50 micron — this listing.\u003c\/strong\u003e Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat melt blown sediment media does\u003c\/h3\u003e\n\u003cp\u003eSpun polypropylene depth media, graded so the outer layers catch coarse particles and the core catches the fine ones. The cheapest way to get sediment out of a water line.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does nothing for chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-10-micron\"\u003eCB4510-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIt is not washable. Once it loads up it gets replaced — rinsing a melt blown cartridge just drives the trapped silt deeper into the core.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 10\" x 4.5\" Big Blue housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x10-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-MB4510-50, model MB4510-50, Puretec PX50MP1 equivalent, polyspun, spun poly, depth sediment. Also searched as 10 inch x 4.5 inch drinking water cartridge, big blue water filter cartridge, 10 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, melt blown sediment cartridge 50 micron, big blue replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-MB4510-50 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833052315837,"sku":"FC-MB4510-50","price":37.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/melt-blown-sediment-drinking-water-cartridge-50-micron-10-x-4-5-big-blue-mb4510-filter-cartridges-660.webp?v=1785375687"},{"product_id":"water-filter-cartridge-melt-blown-sediment-4-5x20-1-micron","title":"Melt Blown Sediment Drinking Water Cartridge 1 Micron - 20\" x 4.5\" Big Blue - MB4520-1","description":"\u003c!-- HASP-WFC :: FC-MB4520-1 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003eMelt Blown Sediment Drinking Water Cartridge — 1 Micron — 20\" x 4.5\" Big Blue\u003c\/h3\u003e\n\u003cp\u003eA 1 micron melt blown sediment drinking water cartridge in the 20\" x 4.5\" Big Blue size — 508mm long, 114mm outside diameter. Model \u003cstrong\u003eMB4520-1\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-MB4520-1\u003c\/strong\u003e. It drops straight into any housing built for a standard 4½\" x 20\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e508mm (nominal 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e114mm (nominal 4.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue (also written 4½\" x 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMelt Blown Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMB4520-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 4½\" x 20\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call the 4.5 inch format \u003cstrong\u003eMaxiPlus\u003c\/strong\u003e, so a MaxiPlus 20 housing takes this cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Big Blue 20 inch housings, 3\/4 inch and 1 inch FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater tanks, bores, dams and mains water. This is the standard first-stage sediment cartridge — the one that protects everything downstream of it, including UV steriliser quartz sleeves, carbon cartridges, RO membranes, solenoids and tap cartridges.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-MB4520-1 — model MB4520-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PX Series (polyspun graded-density sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePX01MP2\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eP Series\u003c\/strong\u003e spun polypropylene in the 2.5 inch sizes, and the \u003cstrong\u003eDGD\u003c\/strong\u003e and \u003cstrong\u003eGD\u003c\/strong\u003e dual-gradient cartridges in Big Blue (DGD-2501-20, DGD-5005-20 \/ 155358-43, DGD-7525-20 \/ 155356-43, GD-5010-20BB \/ 555469-43, GD-7520-20BB \/ 555470-43). Note the DGD and GD cartridges are dual-rated (a coarse outer wrap over a finer core), so they are equivalent in duty and fit but not in single micron rating.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e20\" x 4.5\" Big Blue\u003c\/strong\u003e — 508mm long, 114mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A Big Blue housing on the fill manifold for a WWDG swim spa at Officer, VIC. Through the blue sump it looks like a tall slimline. The vernier across the end cap reads 113.6mm and the tape reads 507mm, so it is 20 inch x 4.5 inch — a Big Blue 20. A slimline cartridge dropped into that housing leaves a 25mm annular gap all the way around and filters almost nothing.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 1 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-1-micron\"\u003eMB2510-1 — $7\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-1-micron\"\u003eMB2520-1 — $17\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-1-micron\"\u003eMB4510-1 — $37\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eFine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 20\" x 4.5\" Big Blue size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 micron — this listing.\u003c\/strong\u003e Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-5-micron\"\u003e5 micron — MB4520-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-20-micron\"\u003e20 micron — MB4520-20\u003c\/a\u003e — Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-50-micron\"\u003e50 micron — MB4520-50\u003c\/a\u003e — Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat melt blown sediment media does\u003c\/h3\u003e\n\u003cp\u003eSpun polypropylene depth media, graded so the outer layers catch coarse particles and the core catches the fine ones. The cheapest way to get sediment out of a water line.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does nothing for chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-10-micron\"\u003eCB4520-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIt is not washable. Once it loads up it gets replaced — rinsing a melt blown cartridge just drives the trapped silt deeper into the core.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 20\" x 4.5\" Big Blue housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x20-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-MB4520-1, model MB4520-1, Puretec PX01MP2 equivalent, polyspun, spun poly, depth sediment. Also searched as 20 inch x 4.5 inch drinking water cartridge, big blue water filter cartridge, 20 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, melt blown sediment cartridge 1 micron, big blue replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-MB4520-1 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833060507837,"sku":"FC-MB4520-1","price":68.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/melt-blown-sediment-drinking-water-cartridge-1-micron-20-x-4-5-big-blue-mb4520-filter-cartridges-699.webp?v=1785375688"},{"product_id":"water-filter-cartridge-melt-blown-sediment-4-5x20-5-micron","title":"Melt Blown Sediment Drinking Water Cartridge 5 Micron - 20\" x 4.5\" Big Blue - MB4520-5","description":"\u003c!-- HASP-WFC :: FC-MB4520-5 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003eMelt Blown Sediment Drinking Water Cartridge — 5 Micron — 20\" x 4.5\" Big Blue\u003c\/h3\u003e\n\u003cp\u003eA 5 micron melt blown sediment drinking water cartridge in the 20\" x 4.5\" Big Blue size — 508mm long, 114mm outside diameter. Model \u003cstrong\u003eMB4520-5\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-MB4520-5\u003c\/strong\u003e. It drops straight into any housing built for a standard 4½\" x 20\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e508mm (nominal 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e114mm (nominal 4.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue (also written 4½\" x 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMelt Blown Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMB4520-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 4½\" x 20\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call the 4.5 inch format \u003cstrong\u003eMaxiPlus\u003c\/strong\u003e, so a MaxiPlus 20 housing takes this cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Big Blue 20 inch housings, 3\/4 inch and 1 inch FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater tanks, bores, dams and mains water. This is the standard first-stage sediment cartridge — the one that protects everything downstream of it, including UV steriliser quartz sleeves, carbon cartridges, RO membranes, solenoids and tap cartridges.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-MB4520-5 — model MB4520-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PX Series (polyspun graded-density sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePX05MP2\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eP Series\u003c\/strong\u003e spun polypropylene in the 2.5 inch sizes, and the \u003cstrong\u003eDGD\u003c\/strong\u003e and \u003cstrong\u003eGD\u003c\/strong\u003e dual-gradient cartridges in Big Blue (DGD-2501-20, DGD-5005-20 \/ 155358-43, DGD-7525-20 \/ 155356-43, GD-5010-20BB \/ 555469-43, GD-7520-20BB \/ 555470-43). Note the DGD and GD cartridges are dual-rated (a coarse outer wrap over a finer core), so they are equivalent in duty and fit but not in single micron rating.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e20\" x 4.5\" Big Blue\u003c\/strong\u003e — 508mm long, 114mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A Big Blue housing on the fill manifold for a WWDG swim spa at Officer, VIC. Through the blue sump it looks like a tall slimline. The vernier across the end cap reads 113.6mm and the tape reads 507mm, so it is 20 inch x 4.5 inch — a Big Blue 20. A slimline cartridge dropped into that housing leaves a 25mm annular gap all the way around and filters almost nothing.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 5 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-5-micron\"\u003eMB2510-5 — $7\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-5-micron\"\u003eMB2520-5 — $17\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-5-micron\"\u003eMB4510-5 — $37\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eThe general-purpose rating. Mains water and reasonably clean tank water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 20\" x 4.5\" Big Blue size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-1-micron\"\u003e1 micron — MB4520-1\u003c\/a\u003e — Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5 micron — this listing.\u003c\/strong\u003e The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-20-micron\"\u003e20 micron — MB4520-20\u003c\/a\u003e — Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-50-micron\"\u003e50 micron — MB4520-50\u003c\/a\u003e — Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat melt blown sediment media does\u003c\/h3\u003e\n\u003cp\u003eSpun polypropylene depth media, graded so the outer layers catch coarse particles and the core catches the fine ones. The cheapest way to get sediment out of a water line.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does nothing for chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-10-micron\"\u003eCB4520-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIt is not washable. Once it loads up it gets replaced — rinsing a melt blown cartridge just drives the trapped silt deeper into the core.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 20\" x 4.5\" Big Blue housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x20-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-MB4520-5, model MB4520-5, Puretec PX05MP2 equivalent, polyspun, spun poly, depth sediment. Also searched as 20 inch x 4.5 inch drinking water cartridge, big blue water filter cartridge, 20 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, melt blown sediment cartridge 5 micron, big blue replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-MB4520-5 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833060540605,"sku":"FC-MB4520-5","price":68.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/melt-blown-sediment-drinking-water-cartridge-5-micron-20-x-4-big-blue-mb4520-filter-cartridges-899.webp?v=1785375690"},{"product_id":"water-filter-cartridge-melt-blown-sediment-4-5x20-20-micron","title":"Melt Blown Sediment Drinking Water Cartridge 20 Micron - 20\" x 4.5\" Big Blue - MB4520-20","description":"\u003c!-- HASP-WFC :: FC-MB4520-20 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003eMelt Blown Sediment Drinking Water Cartridge — 20 Micron — 20\" x 4.5\" Big Blue\u003c\/h3\u003e\n\u003cp\u003eA 20 micron melt blown sediment drinking water cartridge in the 20\" x 4.5\" Big Blue size — 508mm long, 114mm outside diameter. Model \u003cstrong\u003eMB4520-20\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-MB4520-20\u003c\/strong\u003e. It drops straight into any housing built for a standard 4½\" x 20\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e508mm (nominal 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e114mm (nominal 4.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue (also written 4½\" x 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMelt Blown Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMB4520-20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 4½\" x 20\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call the 4.5 inch format \u003cstrong\u003eMaxiPlus\u003c\/strong\u003e, so a MaxiPlus 20 housing takes this cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Big Blue 20 inch housings, 3\/4 inch and 1 inch FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater tanks, bores, dams and mains water. This is the standard first-stage sediment cartridge — the one that protects everything downstream of it, including UV steriliser quartz sleeves, carbon cartridges, RO membranes, solenoids and tap cartridges.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-MB4520-20 — model MB4520-20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PX Series (polyspun graded-density sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePX20MP2\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eP Series\u003c\/strong\u003e spun polypropylene in the 2.5 inch sizes, and the \u003cstrong\u003eDGD\u003c\/strong\u003e and \u003cstrong\u003eGD\u003c\/strong\u003e dual-gradient cartridges in Big Blue (DGD-2501-20, DGD-5005-20 \/ 155358-43, DGD-7525-20 \/ 155356-43, GD-5010-20BB \/ 555469-43, GD-7520-20BB \/ 555470-43). Note the DGD and GD cartridges are dual-rated (a coarse outer wrap over a finer core), so they are equivalent in duty and fit but not in single micron rating.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e20\" x 4.5\" Big Blue\u003c\/strong\u003e — 508mm long, 114mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A Big Blue housing on the fill manifold for a WWDG swim spa at Officer, VIC. Through the blue sump it looks like a tall slimline. The vernier across the end cap reads 113.6mm and the tape reads 507mm, so it is 20 inch x 4.5 inch — a Big Blue 20. A slimline cartridge dropped into that housing leaves a 25mm annular gap all the way around and filters almost nothing.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 20 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-20-micron\"\u003eMB2510-20 — $7\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-20-micron\"\u003eMB2520-20 — $17\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-20-micron\"\u003eMB4510-20 — $37\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eVisible grit and sand. A good first stage on tank or bore water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 20\" x 4.5\" Big Blue size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-1-micron\"\u003e1 micron — MB4520-1\u003c\/a\u003e — Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-5-micron\"\u003e5 micron — MB4520-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 micron — this listing.\u003c\/strong\u003e Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-50-micron\"\u003e50 micron — MB4520-50\u003c\/a\u003e — Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat melt blown sediment media does\u003c\/h3\u003e\n\u003cp\u003eSpun polypropylene depth media, graded so the outer layers catch coarse particles and the core catches the fine ones. The cheapest way to get sediment out of a water line.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does nothing for chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-10-micron\"\u003eCB4520-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIt is not washable. Once it loads up it gets replaced — rinsing a melt blown cartridge just drives the trapped silt deeper into the core.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 20\" x 4.5\" Big Blue housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x20-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-MB4520-20, model MB4520-20, Puretec PX20MP2 equivalent, polyspun, spun poly, depth sediment. Also searched as 20 inch x 4.5 inch drinking water cartridge, big blue water filter cartridge, 20 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, melt blown sediment cartridge 20 micron, big blue replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-MB4520-20 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833060573373,"sku":"FC-MB4520-20","price":68.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/melt-blown-sediment-drinking-water-cartridge-20-micron-x-4-5-big-blue-mb4520-filter-cartridges-593.webp?v=1785375690"},{"product_id":"water-filter-cartridge-melt-blown-sediment-4-5x20-50-micron","title":"Melt Blown Sediment Drinking Water Cartridge 50 Micron - 20\" x 4.5\" Big Blue - MB4520-50","description":"\u003c!-- HASP-WFC :: FC-MB4520-50 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003eMelt Blown Sediment Drinking Water Cartridge — 50 Micron — 20\" x 4.5\" Big Blue\u003c\/h3\u003e\n\u003cp\u003eA 50 micron melt blown sediment drinking water cartridge in the 20\" x 4.5\" Big Blue size — 508mm long, 114mm outside diameter. Model \u003cstrong\u003eMB4520-50\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-MB4520-50\u003c\/strong\u003e. It drops straight into any housing built for a standard 4½\" x 20\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e508mm (nominal 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e114mm (nominal 4.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue (also written 4½\" x 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMelt Blown Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMB4520-50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 4½\" x 20\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call the 4.5 inch format \u003cstrong\u003eMaxiPlus\u003c\/strong\u003e, so a MaxiPlus 20 housing takes this cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Big Blue 20 inch housings, 3\/4 inch and 1 inch FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater tanks, bores, dams and mains water. This is the standard first-stage sediment cartridge — the one that protects everything downstream of it, including UV steriliser quartz sleeves, carbon cartridges, RO membranes, solenoids and tap cartridges.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-MB4520-50 — model MB4520-50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PX Series (polyspun graded-density sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePX50MP2\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eP Series\u003c\/strong\u003e spun polypropylene in the 2.5 inch sizes, and the \u003cstrong\u003eDGD\u003c\/strong\u003e and \u003cstrong\u003eGD\u003c\/strong\u003e dual-gradient cartridges in Big Blue (DGD-2501-20, DGD-5005-20 \/ 155358-43, DGD-7525-20 \/ 155356-43, GD-5010-20BB \/ 555469-43, GD-7520-20BB \/ 555470-43). Note the DGD and GD cartridges are dual-rated (a coarse outer wrap over a finer core), so they are equivalent in duty and fit but not in single micron rating.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e20\" x 4.5\" Big Blue\u003c\/strong\u003e — 508mm long, 114mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A Big Blue housing on the fill manifold for a WWDG swim spa at Officer, VIC. Through the blue sump it looks like a tall slimline. The vernier across the end cap reads 113.6mm and the tape reads 507mm, so it is 20 inch x 4.5 inch — a Big Blue 20. A slimline cartridge dropped into that housing leaves a 25mm annular gap all the way around and filters almost nothing.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 50 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-50-micron\"\u003eMB2510-50 — $7\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-50-micron\"\u003eMB2520-50 — $17\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-50-micron\"\u003eMB4510-50 — $37\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eCoarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 20\" x 4.5\" Big Blue size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-1-micron\"\u003e1 micron — MB4520-1\u003c\/a\u003e — Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-5-micron\"\u003e5 micron — MB4520-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-20-micron\"\u003e20 micron — MB4520-20\u003c\/a\u003e — Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50 micron — this listing.\u003c\/strong\u003e Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat melt blown sediment media does\u003c\/h3\u003e\n\u003cp\u003eSpun polypropylene depth media, graded so the outer layers catch coarse particles and the core catches the fine ones. The cheapest way to get sediment out of a water line.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does nothing for chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-10-micron\"\u003eCB4520-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIt is not washable. Once it loads up it gets replaced — rinsing a melt blown cartridge just drives the trapped silt deeper into the core.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 20\" x 4.5\" Big Blue housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x20-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-MB4520-50, model MB4520-50, Puretec PX50MP2 equivalent, polyspun, spun poly, depth sediment. Also searched as 20 inch x 4.5 inch drinking water cartridge, big blue water filter cartridge, 20 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, melt blown sediment cartridge 50 micron, big blue replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-MB4520-50 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833060638909,"sku":"FC-MB4520-50","price":68.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/melt-blown-sediment-drinking-water-cartridge-50-micron-20-x-4-5-big-blue-mb4520-filter-cartridges-582.webp?v=1785375692"},{"product_id":"water-filter-cartridge-pleated-sediment-2-5x10-1-micron","title":"Pleated Sediment Drinking Water Cartridge 1 Micron - 10\" x 2.5\" Slimline - P2510-1","description":"\u003c!-- HASP-WFC :: FC-P2510-1 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003ePleated Sediment Drinking Water Cartridge — 1 Micron — 10\" x 2.5\" Slimline\u003c\/h3\u003e\n\u003cp\u003eA 1 micron pleated sediment drinking water cartridge in the 10\" x 2.5\" Slimline size — 248mm long, 63–70mm outside diameter. Model \u003cstrong\u003eP2510-1\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-P2510-1\u003c\/strong\u003e. It drops straight into any housing built for a standard 2½\" x 9¾\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e248mm (nominal 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e63–70mm (nominal 2.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline (also written 2½\" x 9¾\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePleated Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eP2510-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 2½\" x 9¾\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call this the standard 10 inch size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Slim Line #10 housings (158195 with 1\/2 inch NPT ports, 158005 with 3\/8 inch NPT) and 3G Standard Series housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater and bore water where turbidity swings with the season, and any install where you want longer between changes. The pleats hold far more dirt than a spun cartridge of the same size and give up less pressure doing it, which matters on gravity-fed tank systems.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-P2510-1 — model P2510-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PL Series (pleated washable sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePL011\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eR Series\u003c\/strong\u003e and \u003cstrong\u003eECP Series\u003c\/strong\u003e pleated cartridges (ECP5-BB, ECP20-20BB \/ 255495-43). The ECP media is a cellulose-polyester blend rather than straight polyester, so it is a fit-and-duty equivalent rather than a like-for-like media match.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e10\" x 2.5\" Slimline\u003c\/strong\u003e — 248mm long, 63–70mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A Mornington townhouse on mains, twin under-sink manifold. The owner orders 20 inch cartridges because a forum told him they last twice as long. The vernier across the end cap reads 63.8mm and the tape reads 249mm — 10 inch x 2.5 inch. The 20 inch cartridge is 260mm too long for that sump and the cap will not thread back on with it in there.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 1 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-1-micron\"\u003eP2520-1 — $31\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-1-micron\"\u003eP4510-1 — $48\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-1-micron\"\u003eP4520-1 — $76\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eFine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 10\" x 2.5\" Slimline size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 micron — this listing.\u003c\/strong\u003e Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-5-micron\"\u003e5 micron — P2510-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-20-micron\"\u003e20 micron — P2510-20\u003c\/a\u003e — Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-50-micron\"\u003e50 micron — P2510-50\u003c\/a\u003e — Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat pleated sediment media does\u003c\/h3\u003e\n\u003cp\u003ePleated polyester media, folded to pack far more surface area into the same housing than a spun or wound cartridge of the same size.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does not touch chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-10-micron\"\u003eCB2510-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003ePleats can be rinsed and re-used a few times, but they pack out eventually and stop recovering pressure. Treat washing as a way to stretch a cartridge, not to keep one forever.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 10\" x 2.5\" Slimline housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x10-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-P2510-1, model P2510-1, Puretec PL011 equivalent, pleated polyester, washable sediment cartridge. Also searched as 10 inch x 2.5 inch drinking water cartridge, slimline water filter cartridge, 10 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, pleated sediment cartridge 1 micron, slimline replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-P2510-1 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833068896445,"sku":"FC-P2510-1","price":18.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/pleated-sediment-drinking-water-cartridge-1-micron-10-x-2-5-slimline-p2510-filter-cartridges-920.webp?v=1785375694"},{"product_id":"water-filter-cartridge-pleated-sediment-2-5x10-5-micron","title":"Pleated Sediment Drinking Water Cartridge 5 Micron - 10\" x 2.5\" Slimline - P2510-5","description":"\u003c!-- HASP-WFC :: FC-P2510-5 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003ePleated Sediment Drinking Water Cartridge — 5 Micron — 10\" x 2.5\" Slimline\u003c\/h3\u003e\n\u003cp\u003eA 5 micron pleated sediment drinking water cartridge in the 10\" x 2.5\" Slimline size — 248mm long, 63–70mm outside diameter. Model \u003cstrong\u003eP2510-5\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-P2510-5\u003c\/strong\u003e. It drops straight into any housing built for a standard 2½\" x 9¾\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e248mm (nominal 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e63–70mm (nominal 2.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline (also written 2½\" x 9¾\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePleated Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eP2510-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 2½\" x 9¾\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call this the standard 10 inch size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Slim Line #10 housings (158195 with 1\/2 inch NPT ports, 158005 with 3\/8 inch NPT) and 3G Standard Series housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater and bore water where turbidity swings with the season, and any install where you want longer between changes. The pleats hold far more dirt than a spun cartridge of the same size and give up less pressure doing it, which matters on gravity-fed tank systems.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-P2510-5 — model P2510-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PL Series (pleated washable sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePL051\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eR Series\u003c\/strong\u003e and \u003cstrong\u003eECP Series\u003c\/strong\u003e pleated cartridges (ECP5-BB, ECP20-20BB \/ 255495-43). The ECP media is a cellulose-polyester blend rather than straight polyester, so it is a fit-and-duty equivalent rather than a like-for-like media match.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e10\" x 2.5\" Slimline\u003c\/strong\u003e — 248mm long, 63–70mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A Mornington townhouse on mains, twin under-sink manifold. The owner orders 20 inch cartridges because a forum told him they last twice as long. The vernier across the end cap reads 63.8mm and the tape reads 249mm — 10 inch x 2.5 inch. The 20 inch cartridge is 260mm too long for that sump and the cap will not thread back on with it in there.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 5 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-5-micron\"\u003eP2520-5 — $31\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-5-micron\"\u003eP4510-5 — $48\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-5-micron\"\u003eP4520-5 — $76\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eThe general-purpose rating. Mains water and reasonably clean tank water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 10\" x 2.5\" Slimline size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-1-micron\"\u003e1 micron — P2510-1\u003c\/a\u003e — Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5 micron — this listing.\u003c\/strong\u003e The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-20-micron\"\u003e20 micron — P2510-20\u003c\/a\u003e — Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-50-micron\"\u003e50 micron — P2510-50\u003c\/a\u003e — Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat pleated sediment media does\u003c\/h3\u003e\n\u003cp\u003ePleated polyester media, folded to pack far more surface area into the same housing than a spun or wound cartridge of the same size.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does not touch chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-10-micron\"\u003eCB2510-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003ePleats can be rinsed and re-used a few times, but they pack out eventually and stop recovering pressure. Treat washing as a way to stretch a cartridge, not to keep one forever.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 10\" x 2.5\" Slimline housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x10-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-P2510-5, model P2510-5, Puretec PL051 equivalent, pleated polyester, washable sediment cartridge. Also searched as 10 inch x 2.5 inch drinking water cartridge, slimline water filter cartridge, 10 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, pleated sediment cartridge 5 micron, slimline replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-P2510-5 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833068929213,"sku":"FC-P2510-5","price":18.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/pleated-sediment-drinking-water-cartridge-5-micron-10-x-2-slimline-p2510-filter-cartridges-933.webp?v=1785375692"},{"product_id":"water-filter-cartridge-pleated-sediment-2-5x10-20-micron","title":"Pleated Sediment Drinking Water Cartridge 20 Micron - 10\" x 2.5\" Slimline - P2510-20","description":"\u003c!-- HASP-WFC :: FC-P2510-20 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003ePleated Sediment Drinking Water Cartridge — 20 Micron — 10\" x 2.5\" Slimline\u003c\/h3\u003e\n\u003cp\u003eA 20 micron pleated sediment drinking water cartridge in the 10\" x 2.5\" Slimline size — 248mm long, 63–70mm outside diameter. Model \u003cstrong\u003eP2510-20\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-P2510-20\u003c\/strong\u003e. It drops straight into any housing built for a standard 2½\" x 9¾\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e248mm (nominal 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e63–70mm (nominal 2.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline (also written 2½\" x 9¾\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePleated Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eP2510-20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 2½\" x 9¾\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call this the standard 10 inch size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Slim Line #10 housings (158195 with 1\/2 inch NPT ports, 158005 with 3\/8 inch NPT) and 3G Standard Series housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater and bore water where turbidity swings with the season, and any install where you want longer between changes. The pleats hold far more dirt than a spun cartridge of the same size and give up less pressure doing it, which matters on gravity-fed tank systems.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-P2510-20 — model P2510-20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PL Series (pleated washable sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePL201\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eR Series\u003c\/strong\u003e and \u003cstrong\u003eECP Series\u003c\/strong\u003e pleated cartridges (ECP5-BB, ECP20-20BB \/ 255495-43). The ECP media is a cellulose-polyester blend rather than straight polyester, so it is a fit-and-duty equivalent rather than a like-for-like media match.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e10\" x 2.5\" Slimline\u003c\/strong\u003e — 248mm long, 63–70mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A Mornington townhouse on mains, twin under-sink manifold. The owner orders 20 inch cartridges because a forum told him they last twice as long. The vernier across the end cap reads 63.8mm and the tape reads 249mm — 10 inch x 2.5 inch. The 20 inch cartridge is 260mm too long for that sump and the cap will not thread back on with it in there.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 20 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-20-micron\"\u003eP2520-20 — $31\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-20-micron\"\u003eP4510-20 — $48\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-20-micron\"\u003eP4520-20 — $76\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eVisible grit and sand. A good first stage on tank or bore water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 10\" x 2.5\" Slimline size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-1-micron\"\u003e1 micron — P2510-1\u003c\/a\u003e — Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-5-micron\"\u003e5 micron — P2510-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 micron — this listing.\u003c\/strong\u003e Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-50-micron\"\u003e50 micron — P2510-50\u003c\/a\u003e — Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat pleated sediment media does\u003c\/h3\u003e\n\u003cp\u003ePleated polyester media, folded to pack far more surface area into the same housing than a spun or wound cartridge of the same size.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does not touch chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-10-micron\"\u003eCB2510-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003ePleats can be rinsed and re-used a few times, but they pack out eventually and stop recovering pressure. Treat washing as a way to stretch a cartridge, not to keep one forever.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 10\" x 2.5\" Slimline housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x10-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-P2510-20, model P2510-20, Puretec PL201 equivalent, pleated polyester, washable sediment cartridge. Also searched as 10 inch x 2.5 inch drinking water cartridge, slimline water filter cartridge, 10 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, pleated sediment cartridge 20 micron, slimline replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-P2510-20 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833068961981,"sku":"FC-P2510-20","price":18.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/pleated-sediment-drinking-water-cartridge-20-micron-10-x-2-5-slimline-p2510-filter-cartridges-543.webp?v=1785375695"},{"product_id":"water-filter-cartridge-pleated-sediment-2-5x10-50-micron","title":"Pleated Sediment Drinking Water Cartridge 50 Micron - 10\" x 2.5\" Slimline - P2510-50","description":"\u003c!-- HASP-WFC :: FC-P2510-50 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003ePleated Sediment Drinking Water Cartridge — 50 Micron — 10\" x 2.5\" Slimline\u003c\/h3\u003e\n\u003cp\u003eA 50 micron pleated sediment drinking water cartridge in the 10\" x 2.5\" Slimline size — 248mm long, 63–70mm outside diameter. Model \u003cstrong\u003eP2510-50\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-P2510-50\u003c\/strong\u003e. It drops straight into any housing built for a standard 2½\" x 9¾\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e248mm (nominal 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e63–70mm (nominal 2.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline (also written 2½\" x 9¾\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePleated Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eP2510-50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 2½\" x 9¾\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call this the standard 10 inch size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Slim Line #10 housings (158195 with 1\/2 inch NPT ports, 158005 with 3\/8 inch NPT) and 3G Standard Series housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater and bore water where turbidity swings with the season, and any install where you want longer between changes. The pleats hold far more dirt than a spun cartridge of the same size and give up less pressure doing it, which matters on gravity-fed tank systems.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-P2510-50 — model P2510-50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PL Series (pleated washable sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePL501\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eR Series\u003c\/strong\u003e and \u003cstrong\u003eECP Series\u003c\/strong\u003e pleated cartridges (ECP5-BB, ECP20-20BB \/ 255495-43). The ECP media is a cellulose-polyester blend rather than straight polyester, so it is a fit-and-duty equivalent rather than a like-for-like media match.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e10\" x 2.5\" Slimline\u003c\/strong\u003e — 248mm long, 63–70mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A Mornington townhouse on mains, twin under-sink manifold. The owner orders 20 inch cartridges because a forum told him they last twice as long. The vernier across the end cap reads 63.8mm and the tape reads 249mm — 10 inch x 2.5 inch. The 20 inch cartridge is 260mm too long for that sump and the cap will not thread back on with it in there.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 50 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-50-micron\"\u003eP2520-50 — $31\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-50-micron\"\u003eP4510-50 — $48\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-50-micron\"\u003eP4520-50 — $76\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eCoarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 10\" x 2.5\" Slimline size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-1-micron\"\u003e1 micron — P2510-1\u003c\/a\u003e — Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-5-micron\"\u003e5 micron — P2510-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-20-micron\"\u003e20 micron — P2510-20\u003c\/a\u003e — Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50 micron — this listing.\u003c\/strong\u003e Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat pleated sediment media does\u003c\/h3\u003e\n\u003cp\u003ePleated polyester media, folded to pack far more surface area into the same housing than a spun or wound cartridge of the same size.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does not touch chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-10-micron\"\u003eCB2510-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003ePleats can be rinsed and re-used a few times, but they pack out eventually and stop recovering pressure. Treat washing as a way to stretch a cartridge, not to keep one forever.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 10\" x 2.5\" Slimline housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x10-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-P2510-50, model P2510-50, Puretec PL501 equivalent, pleated polyester, washable sediment cartridge. Also searched as 10 inch x 2.5 inch drinking water cartridge, slimline water filter cartridge, 10 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, pleated sediment cartridge 50 micron, slimline replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-P2510-50 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833068994749,"sku":"FC-P2510-50","price":18.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/pleated-sediment-drinking-water-cartridge-50-micron-10-x-2-5-slimline-p2510-filter-cartridges-524.webp?v=1785375697"},{"product_id":"water-filter-cartridge-pleated-sediment-2-5x20-1-micron","title":"Pleated Sediment Drinking Water Cartridge 1 Micron - 20\" x 2.5\" Slimline - P2520-1","description":"\u003c!-- HASP-WFC :: FC-P2520-1 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003ePleated Sediment Drinking Water Cartridge — 1 Micron — 20\" x 2.5\" Slimline\u003c\/h3\u003e\n\u003cp\u003eA 1 micron pleated sediment drinking water cartridge in the 20\" x 2.5\" Slimline size — 508mm long, 63–70mm outside diameter. Model \u003cstrong\u003eP2520-1\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-P2520-1\u003c\/strong\u003e. It drops straight into any housing built for a standard 2½\" x 20\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e508mm (nominal 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e63–70mm (nominal 2.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline (also written 2½\" x 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePleated Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eP2520-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 2½\" x 20\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call this the 20 inch slimline size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — #20 Slim Line and 3G Standard Series housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater and bore water where turbidity swings with the season, and any install where you want longer between changes. The pleats hold far more dirt than a spun cartridge of the same size and give up less pressure doing it, which matters on gravity-fed tank systems.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-P2520-1 — model P2520-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PL Series (pleated washable sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePL012\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eR Series\u003c\/strong\u003e and \u003cstrong\u003eECP Series\u003c\/strong\u003e pleated cartridges (ECP5-BB, ECP20-20BB \/ 255495-43). The ECP media is a cellulose-polyester blend rather than straight polyester, so it is a fit-and-duty equivalent rather than a like-for-like media match.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e20\" x 2.5\" Slimline\u003c\/strong\u003e — 508mm long, 63–70mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A tank-fed house at Pearcedale, VIC. Through the clear sump the cartridge looks slim, so the owner orders a 10 inch. The vernier across the end cap reads 64.1mm — slimline, correct — but the tape reads 505mm. It was a 20 inch slimline all along. The 10 inch would have sat in the bottom of the sump with about 260mm of open water above it, and everything would have run straight past the media unfiltered.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 1 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-1-micron\"\u003eP2510-1 — $18\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-1-micron\"\u003eP4510-1 — $48\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-1-micron\"\u003eP4520-1 — $76\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eFine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 20\" x 2.5\" Slimline size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 micron — this listing.\u003c\/strong\u003e Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-5-micron\"\u003e5 micron — P2520-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-20-micron\"\u003e20 micron — P2520-20\u003c\/a\u003e — Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-50-micron\"\u003e50 micron — P2520-50\u003c\/a\u003e — Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat pleated sediment media does\u003c\/h3\u003e\n\u003cp\u003ePleated polyester media, folded to pack far more surface area into the same housing than a spun or wound cartridge of the same size.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does not touch chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-10-micron\"\u003eCB2520-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003ePleats can be rinsed and re-used a few times, but they pack out eventually and stop recovering pressure. Treat washing as a way to stretch a cartridge, not to keep one forever.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 20\" x 2.5\" Slimline housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x20-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-P2520-1, model P2520-1, Puretec PL012 equivalent, pleated polyester, washable sediment cartridge. Also searched as 20 inch x 2.5 inch drinking water cartridge, slimline water filter cartridge, 20 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, pleated sediment cartridge 1 micron, slimline replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-P2520-1 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833077186749,"sku":"FC-P2520-1","price":31.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/pleated-sediment-drinking-water-cartridge-1-micron-20-x-2-5-slimline-p2520-filter-cartridges-716.webp?v=1785375726"},{"product_id":"water-filter-cartridge-pleated-sediment-2-5x20-5-micron","title":"Pleated Sediment Drinking Water Cartridge 5 Micron - 20\" x 2.5\" Slimline - P2520-5","description":"\u003c!-- HASP-WFC :: FC-P2520-5 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003ePleated Sediment Drinking Water Cartridge — 5 Micron — 20\" x 2.5\" Slimline\u003c\/h3\u003e\n\u003cp\u003eA 5 micron pleated sediment drinking water cartridge in the 20\" x 2.5\" Slimline size — 508mm long, 63–70mm outside diameter. Model \u003cstrong\u003eP2520-5\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-P2520-5\u003c\/strong\u003e. It drops straight into any housing built for a standard 2½\" x 20\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e508mm (nominal 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e63–70mm (nominal 2.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline (also written 2½\" x 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePleated Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eP2520-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 2½\" x 20\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call this the 20 inch slimline size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — #20 Slim Line and 3G Standard Series housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater and bore water where turbidity swings with the season, and any install where you want longer between changes. The pleats hold far more dirt than a spun cartridge of the same size and give up less pressure doing it, which matters on gravity-fed tank systems.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-P2520-5 — model P2520-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PL Series (pleated washable sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePL052\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eR Series\u003c\/strong\u003e and \u003cstrong\u003eECP Series\u003c\/strong\u003e pleated cartridges (ECP5-BB, ECP20-20BB \/ 255495-43). The ECP media is a cellulose-polyester blend rather than straight polyester, so it is a fit-and-duty equivalent rather than a like-for-like media match.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e20\" x 2.5\" Slimline\u003c\/strong\u003e — 508mm long, 63–70mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A tank-fed house at Pearcedale, VIC. Through the clear sump the cartridge looks slim, so the owner orders a 10 inch. The vernier across the end cap reads 64.1mm — slimline, correct — but the tape reads 505mm. It was a 20 inch slimline all along. The 10 inch would have sat in the bottom of the sump with about 260mm of open water above it, and everything would have run straight past the media unfiltered.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 5 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-5-micron\"\u003eP2510-5 — $18\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-5-micron\"\u003eP4510-5 — $48\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-5-micron\"\u003eP4520-5 — $76\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eThe general-purpose rating. Mains water and reasonably clean tank water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 20\" x 2.5\" Slimline size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-1-micron\"\u003e1 micron — P2520-1\u003c\/a\u003e — Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5 micron — this listing.\u003c\/strong\u003e The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-20-micron\"\u003e20 micron — P2520-20\u003c\/a\u003e — Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-50-micron\"\u003e50 micron — P2520-50\u003c\/a\u003e — Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat pleated sediment media does\u003c\/h3\u003e\n\u003cp\u003ePleated polyester media, folded to pack far more surface area into the same housing than a spun or wound cartridge of the same size.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does not touch chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-10-micron\"\u003eCB2520-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003ePleats can be rinsed and re-used a few times, but they pack out eventually and stop recovering pressure. Treat washing as a way to stretch a cartridge, not to keep one forever.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 20\" x 2.5\" Slimline housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x20-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-P2520-5, model P2520-5, Puretec PL052 equivalent, pleated polyester, washable sediment cartridge. Also searched as 20 inch x 2.5 inch drinking water cartridge, slimline water filter cartridge, 20 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, pleated sediment cartridge 5 micron, slimline replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-P2520-5 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833077219517,"sku":"FC-P2520-5","price":31.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/pleated-sediment-drinking-water-cartridge-5-micron-20-x-2-slimline-p2520-filter-cartridges-613.webp?v=1785375729"},{"product_id":"water-filter-cartridge-pleated-sediment-2-5x20-20-micron","title":"Pleated Sediment Drinking Water Cartridge 20 Micron - 20\" x 2.5\" Slimline - P2520-20","description":"\u003c!-- HASP-WFC :: FC-P2520-20 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003ePleated Sediment Drinking Water Cartridge — 20 Micron — 20\" x 2.5\" Slimline\u003c\/h3\u003e\n\u003cp\u003eA 20 micron pleated sediment drinking water cartridge in the 20\" x 2.5\" Slimline size — 508mm long, 63–70mm outside diameter. Model \u003cstrong\u003eP2520-20\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-P2520-20\u003c\/strong\u003e. It drops straight into any housing built for a standard 2½\" x 20\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e508mm (nominal 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e63–70mm (nominal 2.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline (also written 2½\" x 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePleated Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eP2520-20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 2½\" x 20\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call this the 20 inch slimline size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — #20 Slim Line and 3G Standard Series housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater and bore water where turbidity swings with the season, and any install where you want longer between changes. The pleats hold far more dirt than a spun cartridge of the same size and give up less pressure doing it, which matters on gravity-fed tank systems.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-P2520-20 — model P2520-20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PL Series (pleated washable sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePL202\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eR Series\u003c\/strong\u003e and \u003cstrong\u003eECP Series\u003c\/strong\u003e pleated cartridges (ECP5-BB, ECP20-20BB \/ 255495-43). The ECP media is a cellulose-polyester blend rather than straight polyester, so it is a fit-and-duty equivalent rather than a like-for-like media match.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e20\" x 2.5\" Slimline\u003c\/strong\u003e — 508mm long, 63–70mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A tank-fed house at Pearcedale, VIC. Through the clear sump the cartridge looks slim, so the owner orders a 10 inch. The vernier across the end cap reads 64.1mm — slimline, correct — but the tape reads 505mm. It was a 20 inch slimline all along. The 10 inch would have sat in the bottom of the sump with about 260mm of open water above it, and everything would have run straight past the media unfiltered.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 20 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-20-micron\"\u003eP2510-20 — $18\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-20-micron\"\u003eP4510-20 — $48\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-20-micron\"\u003eP4520-20 — $76\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eVisible grit and sand. A good first stage on tank or bore water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 20\" x 2.5\" Slimline size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-1-micron\"\u003e1 micron — P2520-1\u003c\/a\u003e — Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-5-micron\"\u003e5 micron — P2520-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 micron — this listing.\u003c\/strong\u003e Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-50-micron\"\u003e50 micron — P2520-50\u003c\/a\u003e — Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat pleated sediment media does\u003c\/h3\u003e\n\u003cp\u003ePleated polyester media, folded to pack far more surface area into the same housing than a spun or wound cartridge of the same size.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does not touch chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-10-micron\"\u003eCB2520-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003ePleats can be rinsed and re-used a few times, but they pack out eventually and stop recovering pressure. Treat washing as a way to stretch a cartridge, not to keep one forever.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 20\" x 2.5\" Slimline housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x20-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-P2520-20, model P2520-20, Puretec PL202 equivalent, pleated polyester, washable sediment cartridge. Also searched as 20 inch x 2.5 inch drinking water cartridge, slimline water filter cartridge, 20 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, pleated sediment cartridge 20 micron, slimline replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-P2520-20 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833077252285,"sku":"FC-P2520-20","price":31.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/pleated-sediment-drinking-water-cartridge-20-micron-x-2-5-slimline-p2520-filter-cartridges-795.webp?v=1785375731"},{"product_id":"water-filter-cartridge-pleated-sediment-2-5x20-50-micron","title":"Pleated Sediment Drinking Water Cartridge 50 Micron - 20\" x 2.5\" Slimline - P2520-50","description":"\u003c!-- HASP-WFC :: FC-P2520-50 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003ePleated Sediment Drinking Water Cartridge — 50 Micron — 20\" x 2.5\" Slimline\u003c\/h3\u003e\n\u003cp\u003eA 50 micron pleated sediment drinking water cartridge in the 20\" x 2.5\" Slimline size — 508mm long, 63–70mm outside diameter. Model \u003cstrong\u003eP2520-50\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-P2520-50\u003c\/strong\u003e. It drops straight into any housing built for a standard 2½\" x 20\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e508mm (nominal 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e63–70mm (nominal 2.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline (also written 2½\" x 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePleated Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eP2520-50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 2½\" x 20\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call this the 20 inch slimline size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — #20 Slim Line and 3G Standard Series housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater and bore water where turbidity swings with the season, and any install where you want longer between changes. The pleats hold far more dirt than a spun cartridge of the same size and give up less pressure doing it, which matters on gravity-fed tank systems.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-P2520-50 — model P2520-50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PL Series (pleated washable sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePL502\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eR Series\u003c\/strong\u003e and \u003cstrong\u003eECP Series\u003c\/strong\u003e pleated cartridges (ECP5-BB, ECP20-20BB \/ 255495-43). The ECP media is a cellulose-polyester blend rather than straight polyester, so it is a fit-and-duty equivalent rather than a like-for-like media match.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e20\" x 2.5\" Slimline\u003c\/strong\u003e — 508mm long, 63–70mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A tank-fed house at Pearcedale, VIC. Through the clear sump the cartridge looks slim, so the owner orders a 10 inch. The vernier across the end cap reads 64.1mm — slimline, correct — but the tape reads 505mm. It was a 20 inch slimline all along. The 10 inch would have sat in the bottom of the sump with about 260mm of open water above it, and everything would have run straight past the media unfiltered.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 50 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-50-micron\"\u003eP2510-50 — $18\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-50-micron\"\u003eP4510-50 — $48\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-50-micron\"\u003eP4520-50 — $76\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eCoarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 20\" x 2.5\" Slimline size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-1-micron\"\u003e1 micron — P2520-1\u003c\/a\u003e — Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-5-micron\"\u003e5 micron — P2520-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-20-micron\"\u003e20 micron — P2520-20\u003c\/a\u003e — Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50 micron — this listing.\u003c\/strong\u003e Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat pleated sediment media does\u003c\/h3\u003e\n\u003cp\u003ePleated polyester media, folded to pack far more surface area into the same housing than a spun or wound cartridge of the same size.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does not touch chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-10-micron\"\u003eCB2520-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003ePleats can be rinsed and re-used a few times, but they pack out eventually and stop recovering pressure. Treat washing as a way to stretch a cartridge, not to keep one forever.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 20\" x 2.5\" Slimline housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x20-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-P2520-50, model P2520-50, Puretec PL502 equivalent, pleated polyester, washable sediment cartridge. Also searched as 20 inch x 2.5 inch drinking water cartridge, slimline water filter cartridge, 20 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, pleated sediment cartridge 50 micron, slimline replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-P2520-50 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833077317821,"sku":"FC-P2520-50","price":31.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/pleated-sediment-drinking-water-cartridge-50-micron-20-x-2-5-slimline-p2520-filter-cartridges-410.webp?v=1785375732"},{"product_id":"water-filter-cartridge-pleated-sediment-4-5x10-1-micron","title":"Pleated Sediment Drinking Water Cartridge 1 Micron - 10\" x 4.5\" Big Blue - P4510-1","description":"\u003c!-- HASP-WFC :: FC-P4510-1 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003ePleated Sediment Drinking Water Cartridge — 1 Micron — 10\" x 4.5\" Big Blue\u003c\/h3\u003e\n\u003cp\u003eA 1 micron pleated sediment drinking water cartridge in the 10\" x 4.5\" Big Blue size — 248mm long, 114mm outside diameter. Model \u003cstrong\u003eP4510-1\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-P4510-1\u003c\/strong\u003e. It drops straight into any housing built for a standard 4½\" x 9¾\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e248mm (nominal 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e114mm (nominal 4.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue (also written 4½\" x 9¾\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePleated Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eP4510-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 4½\" x 9¾\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call the 4.5 inch format \u003cstrong\u003eMaxiPlus\u003c\/strong\u003e, so a MaxiPlus 10 housing takes this cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Big Blue 10 inch housings, 3\/4 inch and 1 inch FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater and bore water where turbidity swings with the season, and any install where you want longer between changes. The pleats hold far more dirt than a spun cartridge of the same size and give up less pressure doing it, which matters on gravity-fed tank systems.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-P4510-1 — model P4510-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PL Series (pleated washable sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePL01MP1\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eR Series\u003c\/strong\u003e and \u003cstrong\u003eECP Series\u003c\/strong\u003e pleated cartridges (ECP5-BB, ECP20-20BB \/ 255495-43). The ECP media is a cellulose-polyester blend rather than straight polyester, so it is a fit-and-duty equivalent rather than a like-for-like media match.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e10\" x 4.5\" Big Blue\u003c\/strong\u003e — 248mm long, 114mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A rainwater line at Officer, VIC, feeding the house and a WWDG swim spa fill point. The cartridge is a squat blue drum, nothing like a slimline. The vernier across the end cap reads 113.6mm and the tape reads 250mm — 10 inch x 4.5 inch, a Big Blue 10. Drop a slimline cartridge into that housing and it sits in a 25mm annular gap all the way around, so most of the water walks straight past the media.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 1 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-1-micron\"\u003eP2510-1 — $18\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-1-micron\"\u003eP2520-1 — $31\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-1-micron\"\u003eP4520-1 — $76\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eFine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 10\" x 4.5\" Big Blue size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 micron — this listing.\u003c\/strong\u003e Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-5-micron\"\u003e5 micron — P4510-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-20-micron\"\u003e20 micron — P4510-20\u003c\/a\u003e — Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-50-micron\"\u003e50 micron — P4510-50\u003c\/a\u003e — Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat pleated sediment media does\u003c\/h3\u003e\n\u003cp\u003ePleated polyester media, folded to pack far more surface area into the same housing than a spun or wound cartridge of the same size.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does not touch chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-10-micron\"\u003eCB4510-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003ePleats can be rinsed and re-used a few times, but they pack out eventually and stop recovering pressure. Treat washing as a way to stretch a cartridge, not to keep one forever.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 10\" x 4.5\" Big Blue housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x10-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-P4510-1, model P4510-1, Puretec PL01MP1 equivalent, pleated polyester, washable sediment cartridge. Also searched as 10 inch x 4.5 inch drinking water cartridge, big blue water filter cartridge, 10 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, pleated sediment cartridge 1 micron, big blue replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-P4510-1 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833085608125,"sku":"FC-P4510-1","price":48.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/pleated-sediment-drinking-water-cartridge-1-micron-10-x-4-5-big-blue-p4510-filter-cartridges-899.webp?v=1785375734"},{"product_id":"water-filter-cartridge-pleated-sediment-4-5x10-5-micron","title":"Pleated Sediment Drinking Water Cartridge 5 Micron - 10\" x 4.5\" Big Blue - P4510-5","description":"\u003c!-- HASP-WFC :: FC-P4510-5 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003ePleated Sediment Drinking Water Cartridge — 5 Micron — 10\" x 4.5\" Big Blue\u003c\/h3\u003e\n\u003cp\u003eA 5 micron pleated sediment drinking water cartridge in the 10\" x 4.5\" Big Blue size — 248mm long, 114mm outside diameter. Model \u003cstrong\u003eP4510-5\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-P4510-5\u003c\/strong\u003e. It drops straight into any housing built for a standard 4½\" x 9¾\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e248mm (nominal 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e114mm (nominal 4.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue (also written 4½\" x 9¾\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePleated Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eP4510-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 4½\" x 9¾\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call the 4.5 inch format \u003cstrong\u003eMaxiPlus\u003c\/strong\u003e, so a MaxiPlus 10 housing takes this cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Big Blue 10 inch housings, 3\/4 inch and 1 inch FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater and bore water where turbidity swings with the season, and any install where you want longer between changes. The pleats hold far more dirt than a spun cartridge of the same size and give up less pressure doing it, which matters on gravity-fed tank systems.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-P4510-5 — model P4510-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PL Series (pleated washable sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePL05MP1\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eR Series\u003c\/strong\u003e and \u003cstrong\u003eECP Series\u003c\/strong\u003e pleated cartridges (ECP5-BB, ECP20-20BB \/ 255495-43). The ECP media is a cellulose-polyester blend rather than straight polyester, so it is a fit-and-duty equivalent rather than a like-for-like media match.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e10\" x 4.5\" Big Blue\u003c\/strong\u003e — 248mm long, 114mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A rainwater line at Officer, VIC, feeding the house and a WWDG swim spa fill point. The cartridge is a squat blue drum, nothing like a slimline. The vernier across the end cap reads 113.6mm and the tape reads 250mm — 10 inch x 4.5 inch, a Big Blue 10. Drop a slimline cartridge into that housing and it sits in a 25mm annular gap all the way around, so most of the water walks straight past the media.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 5 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-5-micron\"\u003eP2510-5 — $18\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-5-micron\"\u003eP2520-5 — $31\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-5-micron\"\u003eP4520-5 — $76\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eThe general-purpose rating. Mains water and reasonably clean tank water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 10\" x 4.5\" Big Blue size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-1-micron\"\u003e1 micron — P4510-1\u003c\/a\u003e — Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5 micron — this listing.\u003c\/strong\u003e The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-20-micron\"\u003e20 micron — P4510-20\u003c\/a\u003e — Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-50-micron\"\u003e50 micron — P4510-50\u003c\/a\u003e — Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat pleated sediment media does\u003c\/h3\u003e\n\u003cp\u003ePleated polyester media, folded to pack far more surface area into the same housing than a spun or wound cartridge of the same size.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does not touch chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-10-micron\"\u003eCB4510-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003ePleats can be rinsed and re-used a few times, but they pack out eventually and stop recovering pressure. Treat washing as a way to stretch a cartridge, not to keep one forever.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 10\" x 4.5\" Big Blue housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x10-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-P4510-5, model P4510-5, Puretec PL05MP1 equivalent, pleated polyester, washable sediment cartridge. Also searched as 10 inch x 4.5 inch drinking water cartridge, big blue water filter cartridge, 10 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, pleated sediment cartridge 5 micron, big blue replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-P4510-5 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833085640893,"sku":"FC-P4510-5","price":48.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/pleated-sediment-drinking-water-cartridge-5-micron-10-x-4-big-blue-p4510-filter-cartridges-860.webp?v=1785375735"},{"product_id":"water-filter-cartridge-pleated-sediment-4-5x10-20-micron","title":"Pleated Sediment Drinking Water Cartridge 20 Micron - 10\" x 4.5\" Big Blue - P4510-20","description":"\u003c!-- HASP-WFC :: FC-P4510-20 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003ePleated Sediment Drinking Water Cartridge — 20 Micron — 10\" x 4.5\" Big Blue\u003c\/h3\u003e\n\u003cp\u003eA 20 micron pleated sediment drinking water cartridge in the 10\" x 4.5\" Big Blue size — 248mm long, 114mm outside diameter. Model \u003cstrong\u003eP4510-20\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-P4510-20\u003c\/strong\u003e. It drops straight into any housing built for a standard 4½\" x 9¾\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e248mm (nominal 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e114mm (nominal 4.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue (also written 4½\" x 9¾\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePleated Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eP4510-20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 4½\" x 9¾\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call the 4.5 inch format \u003cstrong\u003eMaxiPlus\u003c\/strong\u003e, so a MaxiPlus 10 housing takes this cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Big Blue 10 inch housings, 3\/4 inch and 1 inch FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater and bore water where turbidity swings with the season, and any install where you want longer between changes. The pleats hold far more dirt than a spun cartridge of the same size and give up less pressure doing it, which matters on gravity-fed tank systems.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-P4510-20 — model P4510-20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PL Series (pleated washable sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePL20MP1\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eR Series\u003c\/strong\u003e and \u003cstrong\u003eECP Series\u003c\/strong\u003e pleated cartridges (ECP5-BB, ECP20-20BB \/ 255495-43). The ECP media is a cellulose-polyester blend rather than straight polyester, so it is a fit-and-duty equivalent rather than a like-for-like media match.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e10\" x 4.5\" Big Blue\u003c\/strong\u003e — 248mm long, 114mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A rainwater line at Officer, VIC, feeding the house and a WWDG swim spa fill point. The cartridge is a squat blue drum, nothing like a slimline. The vernier across the end cap reads 113.6mm and the tape reads 250mm — 10 inch x 4.5 inch, a Big Blue 10. Drop a slimline cartridge into that housing and it sits in a 25mm annular gap all the way around, so most of the water walks straight past the media.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 20 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-20-micron\"\u003eP2510-20 — $18\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-20-micron\"\u003eP2520-20 — $31\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-20-micron\"\u003eP4520-20 — $76\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eVisible grit and sand. A good first stage on tank or bore water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 10\" x 4.5\" Big Blue size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-1-micron\"\u003e1 micron — P4510-1\u003c\/a\u003e — Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-5-micron\"\u003e5 micron — P4510-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 micron — this listing.\u003c\/strong\u003e Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-50-micron\"\u003e50 micron — P4510-50\u003c\/a\u003e — Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat pleated sediment media does\u003c\/h3\u003e\n\u003cp\u003ePleated polyester media, folded to pack far more surface area into the same housing than a spun or wound cartridge of the same size.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does not touch chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-10-micron\"\u003eCB4510-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003ePleats can be rinsed and re-used a few times, but they pack out eventually and stop recovering pressure. Treat washing as a way to stretch a cartridge, not to keep one forever.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 10\" x 4.5\" Big Blue housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x10-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-P4510-20, model P4510-20, Puretec PL20MP1 equivalent, pleated polyester, washable sediment cartridge. Also searched as 10 inch x 4.5 inch drinking water cartridge, big blue water filter cartridge, 10 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, pleated sediment cartridge 20 micron, big blue replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-P4510-20 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833085673661,"sku":"FC-P4510-20","price":48.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/pleated-sediment-drinking-water-cartridge-20-micron-10-x-4-5-big-blue-p4510-filter-cartridges-728.webp?v=1785375736"},{"product_id":"water-filter-cartridge-pleated-sediment-4-5x10-50-micron","title":"Pleated Sediment Drinking Water Cartridge 50 Micron - 10\" x 4.5\" Big Blue - P4510-50","description":"\u003c!-- HASP-WFC :: FC-P4510-50 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003ePleated Sediment Drinking Water Cartridge — 50 Micron — 10\" x 4.5\" Big Blue\u003c\/h3\u003e\n\u003cp\u003eA 50 micron pleated sediment drinking water cartridge in the 10\" x 4.5\" Big Blue size — 248mm long, 114mm outside diameter. Model \u003cstrong\u003eP4510-50\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-P4510-50\u003c\/strong\u003e. It drops straight into any housing built for a standard 4½\" x 9¾\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e248mm (nominal 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e114mm (nominal 4.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue (also written 4½\" x 9¾\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePleated Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eP4510-50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 4½\" x 9¾\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call the 4.5 inch format \u003cstrong\u003eMaxiPlus\u003c\/strong\u003e, so a MaxiPlus 10 housing takes this cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Big Blue 10 inch housings, 3\/4 inch and 1 inch FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater and bore water where turbidity swings with the season, and any install where you want longer between changes. The pleats hold far more dirt than a spun cartridge of the same size and give up less pressure doing it, which matters on gravity-fed tank systems.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-P4510-50 — model P4510-50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PL Series (pleated washable sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePL50MP1\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eR Series\u003c\/strong\u003e and \u003cstrong\u003eECP Series\u003c\/strong\u003e pleated cartridges (ECP5-BB, ECP20-20BB \/ 255495-43). The ECP media is a cellulose-polyester blend rather than straight polyester, so it is a fit-and-duty equivalent rather than a like-for-like media match.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e10\" x 4.5\" Big Blue\u003c\/strong\u003e — 248mm long, 114mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A rainwater line at Officer, VIC, feeding the house and a WWDG swim spa fill point. The cartridge is a squat blue drum, nothing like a slimline. The vernier across the end cap reads 113.6mm and the tape reads 250mm — 10 inch x 4.5 inch, a Big Blue 10. Drop a slimline cartridge into that housing and it sits in a 25mm annular gap all the way around, so most of the water walks straight past the media.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 50 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-50-micron\"\u003eP2510-50 — $18\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-50-micron\"\u003eP2520-50 — $31\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-50-micron\"\u003eP4520-50 — $76\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eCoarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 10\" x 4.5\" Big Blue size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-1-micron\"\u003e1 micron — P4510-1\u003c\/a\u003e — Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-5-micron\"\u003e5 micron — P4510-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-20-micron\"\u003e20 micron — P4510-20\u003c\/a\u003e — Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50 micron — this listing.\u003c\/strong\u003e Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat pleated sediment media does\u003c\/h3\u003e\n\u003cp\u003ePleated polyester media, folded to pack far more surface area into the same housing than a spun or wound cartridge of the same size.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does not touch chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-10-micron\"\u003eCB4510-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003ePleats can be rinsed and re-used a few times, but they pack out eventually and stop recovering pressure. Treat washing as a way to stretch a cartridge, not to keep one forever.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 10\" x 4.5\" Big Blue housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x10-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-P4510-50, model P4510-50, Puretec PL50MP1 equivalent, pleated polyester, washable sediment cartridge. Also searched as 10 inch x 4.5 inch drinking water cartridge, big blue water filter cartridge, 10 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, pleated sediment cartridge 50 micron, big blue replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-P4510-50 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833085706429,"sku":"FC-P4510-50","price":48.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/pleated-sediment-drinking-water-cartridge-50-micron-10-x-4-5-big-blue-p4510-filter-cartridges-853.webp?v=1785375737"},{"product_id":"water-filter-cartridge-pleated-sediment-4-5x20-1-micron","title":"Pleated Sediment Drinking Water Cartridge 1 Micron - 20\" x 4.5\" Big Blue - P4520-1","description":"\u003c!-- HASP-WFC :: FC-P4520-1 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003ePleated Sediment Drinking Water Cartridge — 1 Micron — 20\" x 4.5\" Big Blue\u003c\/h3\u003e\n\u003cp\u003eA 1 micron pleated sediment drinking water cartridge in the 20\" x 4.5\" Big Blue size — 508mm long, 114mm outside diameter. Model \u003cstrong\u003eP4520-1\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-P4520-1\u003c\/strong\u003e. It drops straight into any housing built for a standard 4½\" x 20\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e508mm (nominal 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e114mm (nominal 4.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue (also written 4½\" x 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePleated Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eP4520-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 4½\" x 20\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call the 4.5 inch format \u003cstrong\u003eMaxiPlus\u003c\/strong\u003e, so a MaxiPlus 20 housing takes this cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Big Blue 20 inch housings, 3\/4 inch and 1 inch FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater and bore water where turbidity swings with the season, and any install where you want longer between changes. The pleats hold far more dirt than a spun cartridge of the same size and give up less pressure doing it, which matters on gravity-fed tank systems.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-P4520-1 — model P4520-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PL Series (pleated washable sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePL01MP2\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eR Series\u003c\/strong\u003e and \u003cstrong\u003eECP Series\u003c\/strong\u003e pleated cartridges (ECP5-BB, ECP20-20BB \/ 255495-43). The ECP media is a cellulose-polyester blend rather than straight polyester, so it is a fit-and-duty equivalent rather than a like-for-like media match.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e20\" x 4.5\" Big Blue\u003c\/strong\u003e — 508mm long, 114mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A Big Blue housing on the fill manifold for a WWDG swim spa at Officer, VIC. Through the blue sump it looks like a tall slimline. The vernier across the end cap reads 113.6mm and the tape reads 507mm, so it is 20 inch x 4.5 inch — a Big Blue 20. A slimline cartridge dropped into that housing leaves a 25mm annular gap all the way around and filters almost nothing.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 1 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-1-micron\"\u003eP2510-1 — $18\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-1-micron\"\u003eP2520-1 — $31\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-1-micron\"\u003eP4510-1 — $48\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eFine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 20\" x 4.5\" Big Blue size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 micron — this listing.\u003c\/strong\u003e Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-5-micron\"\u003e5 micron — P4520-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-20-micron\"\u003e20 micron — P4520-20\u003c\/a\u003e — Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-50-micron\"\u003e50 micron — P4520-50\u003c\/a\u003e — Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat pleated sediment media does\u003c\/h3\u003e\n\u003cp\u003ePleated polyester media, folded to pack far more surface area into the same housing than a spun or wound cartridge of the same size.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does not touch chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-10-micron\"\u003eCB4520-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003ePleats can be rinsed and re-used a few times, but they pack out eventually and stop recovering pressure. Treat washing as a way to stretch a cartridge, not to keep one forever.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 20\" x 4.5\" Big Blue housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x20-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-P4520-1, model P4520-1, Puretec PL01MP2 equivalent, pleated polyester, washable sediment cartridge. Also searched as 20 inch x 4.5 inch drinking water cartridge, big blue water filter cartridge, 20 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, pleated sediment cartridge 1 micron, big blue replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-P4520-1 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833085771965,"sku":"FC-P4520-1","price":76.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/pleated-sediment-drinking-water-cartridge-1-micron-20-x-4-5-big-blue-p4520-filter-cartridges-601.webp?v=1785375739"},{"product_id":"water-filter-cartridge-pleated-sediment-4-5x20-5-micron","title":"Pleated Sediment Drinking Water Cartridge 5 Micron - 20\" x 4.5\" Big Blue - P4520-5","description":"\u003c!-- HASP-WFC :: FC-P4520-5 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003ePleated Sediment Drinking Water Cartridge — 5 Micron — 20\" x 4.5\" Big Blue\u003c\/h3\u003e\n\u003cp\u003eA 5 micron pleated sediment drinking water cartridge in the 20\" x 4.5\" Big Blue size — 508mm long, 114mm outside diameter. Model \u003cstrong\u003eP4520-5\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-P4520-5\u003c\/strong\u003e. It drops straight into any housing built for a standard 4½\" x 20\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e508mm (nominal 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e114mm (nominal 4.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue (also written 4½\" x 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePleated Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eP4520-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 4½\" x 20\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call the 4.5 inch format \u003cstrong\u003eMaxiPlus\u003c\/strong\u003e, so a MaxiPlus 20 housing takes this cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Big Blue 20 inch housings, 3\/4 inch and 1 inch FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater and bore water where turbidity swings with the season, and any install where you want longer between changes. The pleats hold far more dirt than a spun cartridge of the same size and give up less pressure doing it, which matters on gravity-fed tank systems.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-P4520-5 — model P4520-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PL Series (pleated washable sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePL05MP2\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eR Series\u003c\/strong\u003e and \u003cstrong\u003eECP Series\u003c\/strong\u003e pleated cartridges (ECP5-BB, ECP20-20BB \/ 255495-43). The ECP media is a cellulose-polyester blend rather than straight polyester, so it is a fit-and-duty equivalent rather than a like-for-like media match.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e20\" x 4.5\" Big Blue\u003c\/strong\u003e — 508mm long, 114mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A Big Blue housing on the fill manifold for a WWDG swim spa at Officer, VIC. Through the blue sump it looks like a tall slimline. The vernier across the end cap reads 113.6mm and the tape reads 507mm, so it is 20 inch x 4.5 inch — a Big Blue 20. A slimline cartridge dropped into that housing leaves a 25mm annular gap all the way around and filters almost nothing.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 5 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-5-micron\"\u003eP2510-5 — $18\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-5-micron\"\u003eP2520-5 — $31\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-5-micron\"\u003eP4510-5 — $48\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eThe general-purpose rating. Mains water and reasonably clean tank water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 20\" x 4.5\" Big Blue size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-1-micron\"\u003e1 micron — P4520-1\u003c\/a\u003e — Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5 micron — this listing.\u003c\/strong\u003e The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-20-micron\"\u003e20 micron — P4520-20\u003c\/a\u003e — Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-50-micron\"\u003e50 micron — P4520-50\u003c\/a\u003e — Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat pleated sediment media does\u003c\/h3\u003e\n\u003cp\u003ePleated polyester media, folded to pack far more surface area into the same housing than a spun or wound cartridge of the same size.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does not touch chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-10-micron\"\u003eCB4520-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003ePleats can be rinsed and re-used a few times, but they pack out eventually and stop recovering pressure. Treat washing as a way to stretch a cartridge, not to keep one forever.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 20\" x 4.5\" Big Blue housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x20-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-P4520-5, model P4520-5, Puretec PL05MP2 equivalent, pleated polyester, washable sediment cartridge. Also searched as 20 inch x 4.5 inch drinking water cartridge, big blue water filter cartridge, 20 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, pleated sediment cartridge 5 micron, big blue replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-P4520-5 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833085804733,"sku":"FC-P4520-5","price":76.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/pleated-sediment-drinking-water-cartridge-5-micron-20-x-4-big-blue-p4520-filter-cartridges-395.webp?v=1785375741"},{"product_id":"water-filter-cartridge-pleated-sediment-4-5x20-20-micron","title":"Pleated Sediment Drinking Water Cartridge 20 Micron - 20\" x 4.5\" Big Blue - P4520-20","description":"\u003c!-- HASP-WFC :: FC-P4520-20 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003ePleated Sediment Drinking Water Cartridge — 20 Micron — 20\" x 4.5\" Big Blue\u003c\/h3\u003e\n\u003cp\u003eA 20 micron pleated sediment drinking water cartridge in the 20\" x 4.5\" Big Blue size — 508mm long, 114mm outside diameter. Model \u003cstrong\u003eP4520-20\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-P4520-20\u003c\/strong\u003e. It drops straight into any housing built for a standard 4½\" x 20\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e508mm (nominal 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e114mm (nominal 4.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue (also written 4½\" x 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePleated Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eP4520-20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 4½\" x 20\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call the 4.5 inch format \u003cstrong\u003eMaxiPlus\u003c\/strong\u003e, so a MaxiPlus 20 housing takes this cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Big Blue 20 inch housings, 3\/4 inch and 1 inch FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater and bore water where turbidity swings with the season, and any install where you want longer between changes. The pleats hold far more dirt than a spun cartridge of the same size and give up less pressure doing it, which matters on gravity-fed tank systems.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-P4520-20 — model P4520-20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PL Series (pleated washable sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePL20MP2\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eR Series\u003c\/strong\u003e and \u003cstrong\u003eECP Series\u003c\/strong\u003e pleated cartridges (ECP5-BB, ECP20-20BB \/ 255495-43). The ECP media is a cellulose-polyester blend rather than straight polyester, so it is a fit-and-duty equivalent rather than a like-for-like media match.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e20\" x 4.5\" Big Blue\u003c\/strong\u003e — 508mm long, 114mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A Big Blue housing on the fill manifold for a WWDG swim spa at Officer, VIC. Through the blue sump it looks like a tall slimline. The vernier across the end cap reads 113.6mm and the tape reads 507mm, so it is 20 inch x 4.5 inch — a Big Blue 20. A slimline cartridge dropped into that housing leaves a 25mm annular gap all the way around and filters almost nothing.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 20 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-20-micron\"\u003eP2510-20 — $18\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-20-micron\"\u003eP2520-20 — $31\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-20-micron\"\u003eP4510-20 — $48\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eVisible grit and sand. A good first stage on tank or bore water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 20\" x 4.5\" Big Blue size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-1-micron\"\u003e1 micron — P4520-1\u003c\/a\u003e — Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-5-micron\"\u003e5 micron — P4520-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 micron — this listing.\u003c\/strong\u003e Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-50-micron\"\u003e50 micron — P4520-50\u003c\/a\u003e — Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat pleated sediment media does\u003c\/h3\u003e\n\u003cp\u003ePleated polyester media, folded to pack far more surface area into the same housing than a spun or wound cartridge of the same size.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does not touch chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-10-micron\"\u003eCB4520-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003ePleats can be rinsed and re-used a few times, but they pack out eventually and stop recovering pressure. Treat washing as a way to stretch a cartridge, not to keep one forever.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 20\" x 4.5\" Big Blue housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x20-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-P4520-20, model P4520-20, Puretec PL20MP2 equivalent, pleated polyester, washable sediment cartridge. Also searched as 20 inch x 4.5 inch drinking water cartridge, big blue water filter cartridge, 20 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, pleated sediment cartridge 20 micron, big blue replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-P4520-20 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833085837501,"sku":"FC-P4520-20","price":76.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/pleated-sediment-drinking-water-cartridge-20-micron-x-4-5-big-blue-p4520-filter-cartridges-361.webp?v=1785375741"},{"product_id":"water-filter-cartridge-pleated-sediment-4-5x20-50-micron","title":"Pleated Sediment Drinking Water Cartridge 50 Micron - 20\" x 4.5\" Big Blue - P4520-50","description":"\u003c!-- HASP-WFC :: FC-P4520-50 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003ePleated Sediment Drinking Water Cartridge — 50 Micron — 20\" x 4.5\" Big Blue\u003c\/h3\u003e\n\u003cp\u003eA 50 micron pleated sediment drinking water cartridge in the 20\" x 4.5\" Big Blue size — 508mm long, 114mm outside diameter. Model \u003cstrong\u003eP4520-50\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-P4520-50\u003c\/strong\u003e. It drops straight into any housing built for a standard 4½\" x 20\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e508mm (nominal 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e114mm (nominal 4.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue (also written 4½\" x 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePleated Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eP4520-50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 4½\" x 20\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call the 4.5 inch format \u003cstrong\u003eMaxiPlus\u003c\/strong\u003e, so a MaxiPlus 20 housing takes this cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Big Blue 20 inch housings, 3\/4 inch and 1 inch FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater and bore water where turbidity swings with the season, and any install where you want longer between changes. The pleats hold far more dirt than a spun cartridge of the same size and give up less pressure doing it, which matters on gravity-fed tank systems.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-P4520-50 — model P4520-50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e PL Series (pleated washable sediment)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePL50MP2\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eR Series\u003c\/strong\u003e and \u003cstrong\u003eECP Series\u003c\/strong\u003e pleated cartridges (ECP5-BB, ECP20-20BB \/ 255495-43). The ECP media is a cellulose-polyester blend rather than straight polyester, so it is a fit-and-duty equivalent rather than a like-for-like media match.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e20\" x 4.5\" Big Blue\u003c\/strong\u003e — 508mm long, 114mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A Big Blue housing on the fill manifold for a WWDG swim spa at Officer, VIC. Through the blue sump it looks like a tall slimline. The vernier across the end cap reads 113.6mm and the tape reads 507mm, so it is 20 inch x 4.5 inch — a Big Blue 20. A slimline cartridge dropped into that housing leaves a 25mm annular gap all the way around and filters almost nothing.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 50 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-50-micron\"\u003eP2510-50 — $18\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-50-micron\"\u003eP2520-50 — $31\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-50-micron\"\u003eP4510-50 — $48\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eCoarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 20\" x 4.5\" Big Blue size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-1-micron\"\u003e1 micron — P4520-1\u003c\/a\u003e — Fine silt and cyst-size particles. The usual choice as a final polish, or ahead of a UV steriliser that needs clear water to work.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-5-micron\"\u003e5 micron — P4520-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-20-micron\"\u003e20 micron — P4520-20\u003c\/a\u003e — Visible grit and sand. A good first stage on tank or bore water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50 micron — this listing.\u003c\/strong\u003e Coarse pre-filter. Its job is to protect a finer cartridge downstream on dirty bore or dam water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat pleated sediment media does\u003c\/h3\u003e\n\u003cp\u003ePleated polyester media, folded to pack far more surface area into the same housing than a spun or wound cartridge of the same size.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt does not touch chlorine, taste or odour. For that, use a carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-10-micron\"\u003eCB4520-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003ePleats can be rinsed and re-used a few times, but they pack out eventually and stop recovering pressure. Treat washing as a way to stretch a cartridge, not to keep one forever.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 20\" x 4.5\" Big Blue housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x20-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn pressure, not on looks.\u003c\/strong\u003e A sediment cartridge is finished when flow at the tap drops off, regardless of how clean the outside still appears. Surface discolouration is cosmetic; the loading that matters happens inside the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual outside limit on mains water, and considerably less on tank, bore or dam water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-P4520-50, model P4520-50, Puretec PL50MP2 equivalent, pleated polyester, washable sediment cartridge. Also searched as 20 inch x 4.5 inch drinking water cartridge, big blue water filter cartridge, 20 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, pleated sediment cartridge 50 micron, big blue replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-P4520-50 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833085870269,"sku":"FC-P4520-50","price":76.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/pleated-sediment-drinking-water-cartridge-50-micron-20-x-4-5-big-blue-p4520-filter-cartridges-723.webp?v=1785375743"},{"product_id":"water-filter-cartridge-carbon-block-2-5x10-5-micron","title":"Carbon Block Drinking Water Cartridge 5 Micron - 10\" x 2.5\" Slimline - CB2510-5","description":"\u003c!-- HASP-WFC :: FC-CB2510-5 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003eCarbon Block Drinking Water Cartridge — 5 Micron — 10\" x 2.5\" Slimline\u003c\/h3\u003e\n\u003cp\u003eA 5 micron carbon block drinking water cartridge in the 10\" x 2.5\" Slimline size — 248mm long, 63–70mm outside diameter. Model \u003cstrong\u003eCB2510-5\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-CB2510-5\u003c\/strong\u003e. It drops straight into any housing built for a standard 2½\" x 9¾\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e248mm (nominal 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e63–70mm (nominal 2.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline (also written 2½\" x 9¾\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCarbon Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCB2510-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 2½\" x 9¾\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call this the standard 10 inch size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Slim Line #10 housings (158195 with 1\/2 inch NPT ports, 158005 with 3\/8 inch NPT) and 3G Standard Series housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Chlorinated mains water, as the stage nearest the outlet. Kitchen drinking taps, under-sink twin and triple manifolds, ice makers, coffee machines, and spa or pool fill lines where you want the chlorine knocked down before the water goes in.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-CB2510-5 — model CB2510-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e CB Series (carbon block \/ MaxiPlus carbon block)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCB051\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eEP\u003c\/strong\u003e and \u003cstrong\u003eEPM\u003c\/strong\u003e carbon briquette cartridges (EP-10, EP-20, EP-BB, EP20-BB, EPM-10, EPM-20, EPM-BB, EPM-20BB) are the closest match on micron rating. The \u003cstrong\u003eCBC Series\u003c\/strong\u003e (CBC-10, CBC-20, CBC-BB, CBC-20BB) fits the same housings but is rated much finer at 0.5 micron, with a correspondingly higher pressure drop.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e10\" x 2.5\" Slimline\u003c\/strong\u003e — 248mm long, 63–70mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A Mornington townhouse on mains, twin under-sink manifold. The owner orders 20 inch cartridges because a forum told him they last twice as long. The vernier across the end cap reads 63.8mm and the tape reads 249mm — 10 inch x 2.5 inch. The 20 inch cartridge is 260mm too long for that sump and the cap will not thread back on with it in there.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 5 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-5-micron\"\u003eCB2520-5 — $38\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-5-micron\"\u003eCB4510-5 — $84\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-5-micron\"\u003eCB4520-5 — $164\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eThe general-purpose rating. Mains water and reasonably clean tank water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 10\" x 2.5\" Slimline size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e5 micron — this listing.\u003c\/strong\u003e The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-10-micron\"\u003e10 micron — CB2510-10\u003c\/a\u003e — The standard rating for carbon cartridges — open enough to keep flow up while the carbon does the actual work.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat carbon block media does\u003c\/h3\u003e\n\u003cp\u003eAn extruded activated carbon block. Water is forced through the wall of the block rather than past it, so contact time is high and chlorine, chloramine, taste and odour are reduced hard.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt is not a sediment filter. Run it behind a sediment cartridge or it will clog on grit long before the carbon is spent. For that, use a melt blown sediment cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-5-micron\"\u003eMB2510-5\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIt has the highest pressure drop of the four media in this range. On a gravity-fed rainwater line, pleated carbon is the better choice. For that, use the pleated carbon cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x10-10-micron\"\u003ePC2510-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 10\" x 2.5\" Slimline housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x10-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn taste and smell.\u003c\/strong\u003e Carbon is spent when chlorine taste or odour comes back at the tap. There is no visual indicator — a spent carbon cartridge looks identical to a new one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual interval, or sooner on heavily chlorinated supply. Carbon does not last indefinitely simply because the flow is still good.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAfter any long idle period.\u003c\/strong\u003e A wet carbon cartridge left standing for months is somewhere bacteria can grow. If the house or holiday place has been shut up over winter, change it rather than trusting it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-CB2510-5, model CB2510-5, Puretec CB051 equivalent, extruded carbon block, chlorine filter, taste and odour cartridge. Also searched as 10 inch x 2.5 inch drinking water cartridge, slimline water filter cartridge, 10 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, carbon block cartridge 5 micron, slimline replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-CB2510-5 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833094095037,"sku":"FC-CB2510-5","price":19.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/carbon-block-drinking-water-cartridge-5-micron-10-x-2-slimline-cb2510-filter-cartridges-430.webp?v=1785375744"},{"product_id":"water-filter-cartridge-carbon-block-2-5x10-10-micron","title":"Carbon Block Drinking Water Cartridge 10 Micron - 10\" x 2.5\" Slimline - CB2510-10","description":"\u003c!-- HASP-WFC :: FC-CB2510-10 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003eCarbon Block Drinking Water Cartridge — 10 Micron — 10\" x 2.5\" Slimline\u003c\/h3\u003e\n\u003cp\u003eA 10 micron carbon block drinking water cartridge in the 10\" x 2.5\" Slimline size — 248mm long, 63–70mm outside diameter. Model \u003cstrong\u003eCB2510-10\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-CB2510-10\u003c\/strong\u003e. It drops straight into any housing built for a standard 2½\" x 9¾\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e248mm (nominal 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e63–70mm (nominal 2.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline (also written 2½\" x 9¾\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCarbon Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCB2510-10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 2½\" x 9¾\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call this the standard 10 inch size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Slim Line #10 housings (158195 with 1\/2 inch NPT ports, 158005 with 3\/8 inch NPT) and 3G Standard Series housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Chlorinated mains water, as the stage nearest the outlet. Kitchen drinking taps, under-sink twin and triple manifolds, ice makers, coffee machines, and spa or pool fill lines where you want the chlorine knocked down before the water goes in.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-CB2510-10 — model CB2510-10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e CB Series (carbon block \/ MaxiPlus carbon block)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCB101\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eEP\u003c\/strong\u003e and \u003cstrong\u003eEPM\u003c\/strong\u003e carbon briquette cartridges (EP-10, EP-20, EP-BB, EP20-BB, EPM-10, EPM-20, EPM-BB, EPM-20BB) are the closest match on micron rating. The \u003cstrong\u003eCBC Series\u003c\/strong\u003e (CBC-10, CBC-20, CBC-BB, CBC-20BB) fits the same housings but is rated much finer at 0.5 micron, with a correspondingly higher pressure drop.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e10\" x 2.5\" Slimline\u003c\/strong\u003e — 248mm long, 63–70mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A Mornington townhouse on mains, twin under-sink manifold. The owner orders 20 inch cartridges because a forum told him they last twice as long. The vernier across the end cap reads 63.8mm and the tape reads 249mm — 10 inch x 2.5 inch. The 20 inch cartridge is 260mm too long for that sump and the cap will not thread back on with it in there.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 10 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-10-micron\"\u003eCB2520-10 — $38\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-10-micron\"\u003eCB4510-10 — $84\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-10-micron\"\u003eCB4520-10 — $164\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eThe standard rating for carbon cartridges — open enough to keep flow up while the carbon does the actual work.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 10\" x 2.5\" Slimline size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-5-micron\"\u003e5 micron — CB2510-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10 micron — this listing.\u003c\/strong\u003e The standard rating for carbon cartridges — open enough to keep flow up while the carbon does the actual work.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat carbon block media does\u003c\/h3\u003e\n\u003cp\u003eAn extruded activated carbon block. Water is forced through the wall of the block rather than past it, so contact time is high and chlorine, chloramine, taste and odour are reduced hard.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt is not a sediment filter. Run it behind a sediment cartridge or it will clog on grit long before the carbon is spent. For that, use a melt blown sediment cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-5-micron\"\u003eMB2510-5\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIt has the highest pressure drop of the four media in this range. On a gravity-fed rainwater line, pleated carbon is the better choice. For that, use the pleated carbon cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x10-10-micron\"\u003ePC2510-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 10\" x 2.5\" Slimline housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x10-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn taste and smell.\u003c\/strong\u003e Carbon is spent when chlorine taste or odour comes back at the tap. There is no visual indicator — a spent carbon cartridge looks identical to a new one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual interval, or sooner on heavily chlorinated supply. Carbon does not last indefinitely simply because the flow is still good.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAfter any long idle period.\u003c\/strong\u003e A wet carbon cartridge left standing for months is somewhere bacteria can grow. If the house or holiday place has been shut up over winter, change it rather than trusting it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-CB2510-10, model CB2510-10, Puretec CB101 equivalent, extruded carbon block, chlorine filter, taste and odour cartridge. Also searched as 10 inch x 2.5 inch drinking water cartridge, slimline water filter cartridge, 10 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, carbon block cartridge 10 micron, slimline replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-CB2510-10 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833094127805,"sku":"FC-CB2510-10","price":19.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/carbon-block-drinking-water-cartridge-10-micron-x-2-5-slimline-cb2510-filter-cartridges-417.webp?v=1785375747"},{"product_id":"water-filter-cartridge-carbon-block-2-5x20-5-micron","title":"Carbon Block Drinking Water Cartridge 5 Micron - 20\" x 2.5\" Slimline - CB2520-5","description":"\u003c!-- HASP-WFC :: FC-CB2520-5 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003eCarbon Block Drinking Water Cartridge — 5 Micron — 20\" x 2.5\" Slimline\u003c\/h3\u003e\n\u003cp\u003eA 5 micron carbon block drinking water cartridge in the 20\" x 2.5\" Slimline size — 508mm long, 63–70mm outside diameter. Model \u003cstrong\u003eCB2520-5\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-CB2520-5\u003c\/strong\u003e. It drops straight into any housing built for a standard 2½\" x 20\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e508mm (nominal 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e63–70mm (nominal 2.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline (also written 2½\" x 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCarbon Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCB2520-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 2½\" x 20\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call this the 20 inch slimline size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — #20 Slim Line and 3G Standard Series housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Chlorinated mains water, as the stage nearest the outlet. Kitchen drinking taps, under-sink twin and triple manifolds, ice makers, coffee machines, and spa or pool fill lines where you want the chlorine knocked down before the water goes in.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-CB2520-5 — model CB2520-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e CB Series (carbon block \/ MaxiPlus carbon block)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCB052\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eEP\u003c\/strong\u003e and \u003cstrong\u003eEPM\u003c\/strong\u003e carbon briquette cartridges (EP-10, EP-20, EP-BB, EP20-BB, EPM-10, EPM-20, EPM-BB, EPM-20BB) are the closest match on micron rating. The \u003cstrong\u003eCBC Series\u003c\/strong\u003e (CBC-10, CBC-20, CBC-BB, CBC-20BB) fits the same housings but is rated much finer at 0.5 micron, with a correspondingly higher pressure drop.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e20\" x 2.5\" Slimline\u003c\/strong\u003e — 508mm long, 63–70mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A tank-fed house at Pearcedale, VIC. Through the clear sump the cartridge looks slim, so the owner orders a 10 inch. The vernier across the end cap reads 64.1mm — slimline, correct — but the tape reads 505mm. It was a 20 inch slimline all along. The 10 inch would have sat in the bottom of the sump with about 260mm of open water above it, and everything would have run straight past the media unfiltered.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 5 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-5-micron\"\u003eCB2510-5 — $19\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-5-micron\"\u003eCB4510-5 — $84\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-5-micron\"\u003eCB4520-5 — $164\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eThe general-purpose rating. Mains water and reasonably clean tank water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 20\" x 2.5\" Slimline size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e5 micron — this listing.\u003c\/strong\u003e The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-10-micron\"\u003e10 micron — CB2520-10\u003c\/a\u003e — The standard rating for carbon cartridges — open enough to keep flow up while the carbon does the actual work.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat carbon block media does\u003c\/h3\u003e\n\u003cp\u003eAn extruded activated carbon block. Water is forced through the wall of the block rather than past it, so contact time is high and chlorine, chloramine, taste and odour are reduced hard.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt is not a sediment filter. Run it behind a sediment cartridge or it will clog on grit long before the carbon is spent. For that, use a melt blown sediment cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-5-micron\"\u003eMB2520-5\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIt has the highest pressure drop of the four media in this range. On a gravity-fed rainwater line, pleated carbon is the better choice. For that, use the pleated carbon cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x20-10-micron\"\u003ePC2520-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 20\" x 2.5\" Slimline housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x20-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn taste and smell.\u003c\/strong\u003e Carbon is spent when chlorine taste or odour comes back at the tap. There is no visual indicator — a spent carbon cartridge looks identical to a new one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual interval, or sooner on heavily chlorinated supply. Carbon does not last indefinitely simply because the flow is still good.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAfter any long idle period.\u003c\/strong\u003e A wet carbon cartridge left standing for months is somewhere bacteria can grow. If the house or holiday place has been shut up over winter, change it rather than trusting it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-CB2520-5, model CB2520-5, Puretec CB052 equivalent, extruded carbon block, chlorine filter, taste and odour cartridge. Also searched as 20 inch x 2.5 inch drinking water cartridge, slimline water filter cartridge, 20 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, carbon block cartridge 5 micron, slimline replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-CB2520-5 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833094160573,"sku":"FC-CB2520-5","price":38.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/carbon-block-drinking-water-cartridge-5-micron-20-x-2-slimline-cb2520-filter-cartridges-833.webp?v=1785375748"},{"product_id":"water-filter-cartridge-carbon-block-2-5x20-10-micron","title":"Carbon Block Drinking Water Cartridge 10 Micron - 20\" x 2.5\" Slimline - CB2520-10","description":"\u003c!-- HASP-WFC :: FC-CB2520-10 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003eCarbon Block Drinking Water Cartridge — 10 Micron — 20\" x 2.5\" Slimline\u003c\/h3\u003e\n\u003cp\u003eA 10 micron carbon block drinking water cartridge in the 20\" x 2.5\" Slimline size — 508mm long, 63–70mm outside diameter. Model \u003cstrong\u003eCB2520-10\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-CB2520-10\u003c\/strong\u003e. It drops straight into any housing built for a standard 2½\" x 20\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e508mm (nominal 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e63–70mm (nominal 2.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline (also written 2½\" x 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCarbon Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCB2520-10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 2½\" x 20\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call this the 20 inch slimline size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — #20 Slim Line and 3G Standard Series housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Chlorinated mains water, as the stage nearest the outlet. Kitchen drinking taps, under-sink twin and triple manifolds, ice makers, coffee machines, and spa or pool fill lines where you want the chlorine knocked down before the water goes in.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-CB2520-10 — model CB2520-10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e CB Series (carbon block \/ MaxiPlus carbon block)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCB102\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eEP\u003c\/strong\u003e and \u003cstrong\u003eEPM\u003c\/strong\u003e carbon briquette cartridges (EP-10, EP-20, EP-BB, EP20-BB, EPM-10, EPM-20, EPM-BB, EPM-20BB) are the closest match on micron rating. The \u003cstrong\u003eCBC Series\u003c\/strong\u003e (CBC-10, CBC-20, CBC-BB, CBC-20BB) fits the same housings but is rated much finer at 0.5 micron, with a correspondingly higher pressure drop.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e20\" x 2.5\" Slimline\u003c\/strong\u003e — 508mm long, 63–70mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A tank-fed house at Pearcedale, VIC. Through the clear sump the cartridge looks slim, so the owner orders a 10 inch. The vernier across the end cap reads 64.1mm — slimline, correct — but the tape reads 505mm. It was a 20 inch slimline all along. The 10 inch would have sat in the bottom of the sump with about 260mm of open water above it, and everything would have run straight past the media unfiltered.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 10 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-10-micron\"\u003eCB2510-10 — $19\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-10-micron\"\u003eCB4510-10 — $84\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-10-micron\"\u003eCB4520-10 — $164\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eThe standard rating for carbon cartridges — open enough to keep flow up while the carbon does the actual work.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 20\" x 2.5\" Slimline size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-5-micron\"\u003e5 micron — CB2520-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10 micron — this listing.\u003c\/strong\u003e The standard rating for carbon cartridges — open enough to keep flow up while the carbon does the actual work.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat carbon block media does\u003c\/h3\u003e\n\u003cp\u003eAn extruded activated carbon block. Water is forced through the wall of the block rather than past it, so contact time is high and chlorine, chloramine, taste and odour are reduced hard.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt is not a sediment filter. Run it behind a sediment cartridge or it will clog on grit long before the carbon is spent. For that, use a melt blown sediment cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-5-micron\"\u003eMB2520-5\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIt has the highest pressure drop of the four media in this range. On a gravity-fed rainwater line, pleated carbon is the better choice. For that, use the pleated carbon cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x20-10-micron\"\u003ePC2520-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 20\" x 2.5\" Slimline housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x20-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn taste and smell.\u003c\/strong\u003e Carbon is spent when chlorine taste or odour comes back at the tap. There is no visual indicator — a spent carbon cartridge looks identical to a new one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual interval, or sooner on heavily chlorinated supply. Carbon does not last indefinitely simply because the flow is still good.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAfter any long idle period.\u003c\/strong\u003e A wet carbon cartridge left standing for months is somewhere bacteria can grow. If the house or holiday place has been shut up over winter, change it rather than trusting it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-CB2520-10, model CB2520-10, Puretec CB102 equivalent, extruded carbon block, chlorine filter, taste and odour cartridge. Also searched as 20 inch x 2.5 inch drinking water cartridge, slimline water filter cartridge, 20 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, carbon block cartridge 10 micron, slimline replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-CB2520-10 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833094193341,"sku":"FC-CB2520-10","price":38.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/carbon-block-drinking-water-cartridge-10-micron-20-x-2-5-slimline-cb2520-filter-cartridges-689.webp?v=1785375748"},{"product_id":"water-filter-cartridge-carbon-block-4-5x10-5-micron","title":"Carbon Block Drinking Water Cartridge 5 Micron - 10\" x 4.5\" Big Blue - CB4510-5","description":"\u003c!-- HASP-WFC :: FC-CB4510-5 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003eCarbon Block Drinking Water Cartridge — 5 Micron — 10\" x 4.5\" Big Blue\u003c\/h3\u003e\n\u003cp\u003eA 5 micron carbon block drinking water cartridge in the 10\" x 4.5\" Big Blue size — 248mm long, 114mm outside diameter. Model \u003cstrong\u003eCB4510-5\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-CB4510-5\u003c\/strong\u003e. It drops straight into any housing built for a standard 4½\" x 9¾\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e248mm (nominal 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e114mm (nominal 4.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue (also written 4½\" x 9¾\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCarbon Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCB4510-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 4½\" x 9¾\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call the 4.5 inch format \u003cstrong\u003eMaxiPlus\u003c\/strong\u003e, so a MaxiPlus 10 housing takes this cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Big Blue 10 inch housings, 3\/4 inch and 1 inch FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Chlorinated mains water, as the stage nearest the outlet. Kitchen drinking taps, under-sink twin and triple manifolds, ice makers, coffee machines, and spa or pool fill lines where you want the chlorine knocked down before the water goes in.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-CB4510-5 — model CB4510-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e CB Series (carbon block \/ MaxiPlus carbon block)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCB05MP1\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eEP\u003c\/strong\u003e and \u003cstrong\u003eEPM\u003c\/strong\u003e carbon briquette cartridges (EP-10, EP-20, EP-BB, EP20-BB, EPM-10, EPM-20, EPM-BB, EPM-20BB) are the closest match on micron rating. The \u003cstrong\u003eCBC Series\u003c\/strong\u003e (CBC-10, CBC-20, CBC-BB, CBC-20BB) fits the same housings but is rated much finer at 0.5 micron, with a correspondingly higher pressure drop.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e10\" x 4.5\" Big Blue\u003c\/strong\u003e — 248mm long, 114mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A rainwater line at Officer, VIC, feeding the house and a WWDG swim spa fill point. The cartridge is a squat blue drum, nothing like a slimline. The vernier across the end cap reads 113.6mm and the tape reads 250mm — 10 inch x 4.5 inch, a Big Blue 10. Drop a slimline cartridge into that housing and it sits in a 25mm annular gap all the way around, so most of the water walks straight past the media.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 5 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-5-micron\"\u003eCB2510-5 — $19\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-5-micron\"\u003eCB2520-5 — $38\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-5-micron\"\u003eCB4520-5 — $164\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eThe general-purpose rating. Mains water and reasonably clean tank water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 10\" x 4.5\" Big Blue size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e5 micron — this listing.\u003c\/strong\u003e The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-10-micron\"\u003e10 micron — CB4510-10\u003c\/a\u003e — The standard rating for carbon cartridges — open enough to keep flow up while the carbon does the actual work.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat carbon block media does\u003c\/h3\u003e\n\u003cp\u003eAn extruded activated carbon block. Water is forced through the wall of the block rather than past it, so contact time is high and chlorine, chloramine, taste and odour are reduced hard.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt is not a sediment filter. Run it behind a sediment cartridge or it will clog on grit long before the carbon is spent. For that, use a melt blown sediment cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-5-micron\"\u003eMB4510-5\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIt has the highest pressure drop of the four media in this range. On a gravity-fed rainwater line, pleated carbon is the better choice. For that, use the pleated carbon cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x10-10-micron\"\u003ePC4510-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 10\" x 4.5\" Big Blue housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x10-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn taste and smell.\u003c\/strong\u003e Carbon is spent when chlorine taste or odour comes back at the tap. There is no visual indicator — a spent carbon cartridge looks identical to a new one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual interval, or sooner on heavily chlorinated supply. Carbon does not last indefinitely simply because the flow is still good.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAfter any long idle period.\u003c\/strong\u003e A wet carbon cartridge left standing for months is somewhere bacteria can grow. If the house or holiday place has been shut up over winter, change it rather than trusting it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-CB4510-5, model CB4510-5, Puretec CB05MP1 equivalent, extruded carbon block, chlorine filter, taste and odour cartridge. Also searched as 10 inch x 4.5 inch drinking water cartridge, big blue water filter cartridge, 10 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, carbon block cartridge 5 micron, big blue replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-CB4510-5 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833102450877,"sku":"FC-CB4510-5","price":84.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/carbon-block-drinking-water-cartridge-5-micron-10-x-4-big-blue-cb4510-filter-cartridges-867.webp?v=1785375754"},{"product_id":"water-filter-cartridge-carbon-block-4-5x10-10-micron","title":"Carbon Block Drinking Water Cartridge 10 Micron - 10\" x 4.5\" Big Blue - CB4510-10","description":"\u003c!-- HASP-WFC :: FC-CB4510-10 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003eCarbon Block Drinking Water Cartridge — 10 Micron — 10\" x 4.5\" Big Blue\u003c\/h3\u003e\n\u003cp\u003eA 10 micron carbon block drinking water cartridge in the 10\" x 4.5\" Big Blue size — 248mm long, 114mm outside diameter. Model \u003cstrong\u003eCB4510-10\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-CB4510-10\u003c\/strong\u003e. It drops straight into any housing built for a standard 4½\" x 9¾\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e248mm (nominal 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e114mm (nominal 4.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue (also written 4½\" x 9¾\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCarbon Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCB4510-10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 4½\" x 9¾\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call the 4.5 inch format \u003cstrong\u003eMaxiPlus\u003c\/strong\u003e, so a MaxiPlus 10 housing takes this cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Big Blue 10 inch housings, 3\/4 inch and 1 inch FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Chlorinated mains water, as the stage nearest the outlet. Kitchen drinking taps, under-sink twin and triple manifolds, ice makers, coffee machines, and spa or pool fill lines where you want the chlorine knocked down before the water goes in.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-CB4510-10 — model CB4510-10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e CB Series (carbon block \/ MaxiPlus carbon block)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCB10MP1\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eEP\u003c\/strong\u003e and \u003cstrong\u003eEPM\u003c\/strong\u003e carbon briquette cartridges (EP-10, EP-20, EP-BB, EP20-BB, EPM-10, EPM-20, EPM-BB, EPM-20BB) are the closest match on micron rating. The \u003cstrong\u003eCBC Series\u003c\/strong\u003e (CBC-10, CBC-20, CBC-BB, CBC-20BB) fits the same housings but is rated much finer at 0.5 micron, with a correspondingly higher pressure drop.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e10\" x 4.5\" Big Blue\u003c\/strong\u003e — 248mm long, 114mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A rainwater line at Officer, VIC, feeding the house and a WWDG swim spa fill point. The cartridge is a squat blue drum, nothing like a slimline. The vernier across the end cap reads 113.6mm and the tape reads 250mm — 10 inch x 4.5 inch, a Big Blue 10. Drop a slimline cartridge into that housing and it sits in a 25mm annular gap all the way around, so most of the water walks straight past the media.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 10 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-10-micron\"\u003eCB2510-10 — $19\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-10-micron\"\u003eCB2520-10 — $38\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-10-micron\"\u003eCB4520-10 — $164\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eThe standard rating for carbon cartridges — open enough to keep flow up while the carbon does the actual work.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 10\" x 4.5\" Big Blue size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-5-micron\"\u003e5 micron — CB4510-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10 micron — this listing.\u003c\/strong\u003e The standard rating for carbon cartridges — open enough to keep flow up while the carbon does the actual work.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat carbon block media does\u003c\/h3\u003e\n\u003cp\u003eAn extruded activated carbon block. Water is forced through the wall of the block rather than past it, so contact time is high and chlorine, chloramine, taste and odour are reduced hard.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt is not a sediment filter. Run it behind a sediment cartridge or it will clog on grit long before the carbon is spent. For that, use a melt blown sediment cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-5-micron\"\u003eMB4510-5\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIt has the highest pressure drop of the four media in this range. On a gravity-fed rainwater line, pleated carbon is the better choice. For that, use the pleated carbon cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x10-10-micron\"\u003ePC4510-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 10\" x 4.5\" Big Blue housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x10-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn taste and smell.\u003c\/strong\u003e Carbon is spent when chlorine taste or odour comes back at the tap. There is no visual indicator — a spent carbon cartridge looks identical to a new one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual interval, or sooner on heavily chlorinated supply. Carbon does not last indefinitely simply because the flow is still good.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAfter any long idle period.\u003c\/strong\u003e A wet carbon cartridge left standing for months is somewhere bacteria can grow. If the house or holiday place has been shut up over winter, change it rather than trusting it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-CB4510-10, model CB4510-10, Puretec CB10MP1 equivalent, extruded carbon block, chlorine filter, taste and odour cartridge. Also searched as 10 inch x 4.5 inch drinking water cartridge, big blue water filter cartridge, 10 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, carbon block cartridge 10 micron, big blue replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-CB4510-10 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833102483645,"sku":"FC-CB4510-10","price":84.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/carbon-block-drinking-water-cartridge-10-micron-x-4-5-big-blue-cb4510-filter-cartridges-700.webp?v=1785375749"},{"product_id":"water-filter-cartridge-carbon-block-4-5x20-5-micron","title":"Carbon Block Drinking Water Cartridge 5 Micron - 20\" x 4.5\" Big Blue - CB4520-5","description":"\u003c!-- HASP-WFC :: FC-CB4520-5 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003eCarbon Block Drinking Water Cartridge — 5 Micron — 20\" x 4.5\" Big Blue\u003c\/h3\u003e\n\u003cp\u003eA 5 micron carbon block drinking water cartridge in the 20\" x 4.5\" Big Blue size — 508mm long, 114mm outside diameter. Model \u003cstrong\u003eCB4520-5\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-CB4520-5\u003c\/strong\u003e. It drops straight into any housing built for a standard 4½\" x 20\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e508mm (nominal 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e114mm (nominal 4.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue (also written 4½\" x 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCarbon Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCB4520-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 4½\" x 20\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call the 4.5 inch format \u003cstrong\u003eMaxiPlus\u003c\/strong\u003e, so a MaxiPlus 20 housing takes this cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Big Blue 20 inch housings, 3\/4 inch and 1 inch FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Chlorinated mains water, as the stage nearest the outlet. Kitchen drinking taps, under-sink twin and triple manifolds, ice makers, coffee machines, and spa or pool fill lines where you want the chlorine knocked down before the water goes in.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-CB4520-5 — model CB4520-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e CB Series (carbon block \/ MaxiPlus carbon block)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCB05MP2\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eEP\u003c\/strong\u003e and \u003cstrong\u003eEPM\u003c\/strong\u003e carbon briquette cartridges (EP-10, EP-20, EP-BB, EP20-BB, EPM-10, EPM-20, EPM-BB, EPM-20BB) are the closest match on micron rating. The \u003cstrong\u003eCBC Series\u003c\/strong\u003e (CBC-10, CBC-20, CBC-BB, CBC-20BB) fits the same housings but is rated much finer at 0.5 micron, with a correspondingly higher pressure drop.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e20\" x 4.5\" Big Blue\u003c\/strong\u003e — 508mm long, 114mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A Big Blue housing on the fill manifold for a WWDG swim spa at Officer, VIC. Through the blue sump it looks like a tall slimline. The vernier across the end cap reads 113.6mm and the tape reads 507mm, so it is 20 inch x 4.5 inch — a Big Blue 20. A slimline cartridge dropped into that housing leaves a 25mm annular gap all the way around and filters almost nothing.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 5 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-5-micron\"\u003eCB2510-5 — $19\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-5-micron\"\u003eCB2520-5 — $38\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-5-micron\"\u003eCB4510-5 — $84\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eThe general-purpose rating. Mains water and reasonably clean tank water.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 20\" x 4.5\" Big Blue size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e5 micron — this listing.\u003c\/strong\u003e The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-10-micron\"\u003e10 micron — CB4520-10\u003c\/a\u003e — The standard rating for carbon cartridges — open enough to keep flow up while the carbon does the actual work.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat carbon block media does\u003c\/h3\u003e\n\u003cp\u003eAn extruded activated carbon block. Water is forced through the wall of the block rather than past it, so contact time is high and chlorine, chloramine, taste and odour are reduced hard.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt is not a sediment filter. Run it behind a sediment cartridge or it will clog on grit long before the carbon is spent. For that, use a melt blown sediment cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-5-micron\"\u003eMB4520-5\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIt has the highest pressure drop of the four media in this range. On a gravity-fed rainwater line, pleated carbon is the better choice. For that, use the pleated carbon cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x20-10-micron\"\u003ePC4520-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 20\" x 4.5\" Big Blue housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x20-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn taste and smell.\u003c\/strong\u003e Carbon is spent when chlorine taste or odour comes back at the tap. There is no visual indicator — a spent carbon cartridge looks identical to a new one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual interval, or sooner on heavily chlorinated supply. Carbon does not last indefinitely simply because the flow is still good.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAfter any long idle period.\u003c\/strong\u003e A wet carbon cartridge left standing for months is somewhere bacteria can grow. If the house or holiday place has been shut up over winter, change it rather than trusting it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-CB4520-5, model CB4520-5, Puretec CB05MP2 equivalent, extruded carbon block, chlorine filter, taste and odour cartridge. Also searched as 20 inch x 4.5 inch drinking water cartridge, big blue water filter cartridge, 20 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, carbon block cartridge 5 micron, big blue replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-CB4520-5 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833102647485,"sku":"FC-CB4520-5","price":164.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/carbon-block-drinking-water-cartridge-5-micron-20-x-4-big-blue-cb4520-filter-cartridges-702.webp?v=1785375755"},{"product_id":"water-filter-cartridge-carbon-block-4-5x20-10-micron","title":"Carbon Block Drinking Water Cartridge 10 Micron - 20\" x 4.5\" Big Blue - CB4520-10","description":"\u003c!-- HASP-WFC :: FC-CB4520-10 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003eCarbon Block Drinking Water Cartridge — 10 Micron — 20\" x 4.5\" Big Blue\u003c\/h3\u003e\n\u003cp\u003eA 10 micron carbon block drinking water cartridge in the 20\" x 4.5\" Big Blue size — 508mm long, 114mm outside diameter. Model \u003cstrong\u003eCB4520-10\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-CB4520-10\u003c\/strong\u003e. It drops straight into any housing built for a standard 4½\" x 20\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e508mm (nominal 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e114mm (nominal 4.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue (also written 4½\" x 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCarbon Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCB4520-10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 4½\" x 20\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call the 4.5 inch format \u003cstrong\u003eMaxiPlus\u003c\/strong\u003e, so a MaxiPlus 20 housing takes this cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Big Blue 20 inch housings, 3\/4 inch and 1 inch FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Chlorinated mains water, as the stage nearest the outlet. Kitchen drinking taps, under-sink twin and triple manifolds, ice makers, coffee machines, and spa or pool fill lines where you want the chlorine knocked down before the water goes in.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-CB4520-10 — model CB4520-10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e CB Series (carbon block \/ MaxiPlus carbon block)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCB10MP2\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePentek \/ Pentair \u003cstrong\u003eEP\u003c\/strong\u003e and \u003cstrong\u003eEPM\u003c\/strong\u003e carbon briquette cartridges (EP-10, EP-20, EP-BB, EP20-BB, EPM-10, EPM-20, EPM-BB, EPM-20BB) are the closest match on micron rating. The \u003cstrong\u003eCBC Series\u003c\/strong\u003e (CBC-10, CBC-20, CBC-BB, CBC-20BB) fits the same housings but is rated much finer at 0.5 micron, with a correspondingly higher pressure drop.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e20\" x 4.5\" Big Blue\u003c\/strong\u003e — 508mm long, 114mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A Big Blue housing on the fill manifold for a WWDG swim spa at Officer, VIC. Through the blue sump it looks like a tall slimline. The vernier across the end cap reads 113.6mm and the tape reads 507mm, so it is 20 inch x 4.5 inch — a Big Blue 20. A slimline cartridge dropped into that housing leaves a 25mm annular gap all the way around and filters almost nothing.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 10 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-10-micron\"\u003eCB2510-10 — $19\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-10-micron\"\u003eCB2520-10 — $38\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-10-micron\"\u003eCB4510-10 — $84\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eThe standard rating for carbon cartridges — open enough to keep flow up while the carbon does the actual work.\u003c\/p\u003e\n\u003cp\u003eOther ratings in this cartridge, same 20\" x 4.5\" Big Blue size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-5-micron\"\u003e5 micron — CB4520-5\u003c\/a\u003e — The general-purpose rating. Mains water and reasonably clean tank water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10 micron — this listing.\u003c\/strong\u003e The standard rating for carbon cartridges — open enough to keep flow up while the carbon does the actual work.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat carbon block media does\u003c\/h3\u003e\n\u003cp\u003eAn extruded activated carbon block. Water is forced through the wall of the block rather than past it, so contact time is high and chlorine, chloramine, taste and odour are reduced hard.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt is not a sediment filter. Run it behind a sediment cartridge or it will clog on grit long before the carbon is spent. For that, use a melt blown sediment cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-5-micron\"\u003eMB4520-5\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eIt has the highest pressure drop of the four media in this range. On a gravity-fed rainwater line, pleated carbon is the better choice. For that, use the pleated carbon cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x20-10-micron\"\u003ePC4520-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 20\" x 4.5\" Big Blue housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x20-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn taste and smell.\u003c\/strong\u003e Carbon is spent when chlorine taste or odour comes back at the tap. There is no visual indicator — a spent carbon cartridge looks identical to a new one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual interval, or sooner on heavily chlorinated supply. Carbon does not last indefinitely simply because the flow is still good.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAfter any long idle period.\u003c\/strong\u003e A wet carbon cartridge left standing for months is somewhere bacteria can grow. If the house or holiday place has been shut up over winter, change it rather than trusting it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-CB4520-10, model CB4520-10, Puretec CB10MP2 equivalent, extruded carbon block, chlorine filter, taste and odour cartridge. Also searched as 20 inch x 4.5 inch drinking water cartridge, big blue water filter cartridge, 20 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, carbon block cartridge 10 micron, big blue replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-CB4520-10 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833102680253,"sku":"FC-CB4520-10","price":164.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/carbon-block-drinking-water-cartridge-10-micron-20-x-4-5-big-blue-cb4520-filter-cartridges-538.webp?v=1785375757"},{"product_id":"water-filter-cartridge-pleated-carbon-2-5x10-10-micron","title":"Pleated Carbon Drinking Water Cartridge 10 Micron - 10\" x 2.5\" Slimline - PC2510-10","description":"\u003c!-- HASP-WFC :: FC-PC2510-10 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003ePleated Carbon Drinking Water Cartridge — 10 Micron — 10\" x 2.5\" Slimline\u003c\/h3\u003e\n\u003cp\u003eA 10 micron pleated carbon drinking water cartridge in the 10\" x 2.5\" Slimline size — 248mm long, 63–70mm outside diameter. Model \u003cstrong\u003ePC2510-10\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-PC2510-10\u003c\/strong\u003e. It drops straight into any housing built for a standard 2½\" x 9¾\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e248mm (nominal 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e63–70mm (nominal 2.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline (also written 2½\" x 9¾\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePleated Carbon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePC2510-10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 2½\" x 9¾\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call this the standard 10 inch size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Slim Line #10 housings (158195 with 1\/2 inch NPT ports, 158005 with 3\/8 inch NPT) and 3G Standard Series housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater and bore water on single-housing systems, and as a polishing pre-filter ahead of a reverse osmosis unit. Because the media is non-cellulose it resists bacterial attack, which is what makes it suitable for unchlorinated supply where a cellulose pleated cartridge would not be.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-PC2510-10 — model PC2510-10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e DP Series (Dual-Purpose carbon-impregnated pleated)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDP101\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThere is no direct Pentek equivalent to a carbon-impregnated pleated cartridge in this format. The Puretec DP Series is the true cross-reference. If you cannot get either, the usual substitute is a pleated sediment cartridge in the first housing plus a carbon block in the second.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e10\" x 2.5\" Slimline\u003c\/strong\u003e — 248mm long, 63–70mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A Mornington townhouse on mains, twin under-sink manifold. The owner orders 20 inch cartridges because a forum told him they last twice as long. The vernier across the end cap reads 63.8mm and the tape reads 249mm — 10 inch x 2.5 inch. The 20 inch cartridge is 260mm too long for that sump and the cap will not thread back on with it in there.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 10 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x20-10-micron\"\u003ePC2520-10 — $75\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x10-10-micron\"\u003ePC4510-10 — $104\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x20-10-micron\"\u003ePC4520-10 — $187\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eThe standard rating for carbon cartridges — open enough to keep flow up while the carbon does the actual work.\u003c\/p\u003e\n\u003cp\u003ePleated Carbon is made in 10 micron only. If you need a finer or coarser sediment cut than that, run a sediment cartridge in the first housing and this one second — \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-1-micron\"\u003e1 micron melt blown\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-50-micron\"\u003e50 micron melt blown\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat pleated carbon media does\u003c\/h3\u003e\n\u003cp\u003ePleated media impregnated with activated carbon — sediment removal and chlorine reduction in one cartridge, at a far lower pressure drop than a solid carbon block.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt will not strip chlorine as hard as a solid carbon block of the same size. If chlorine reduction is the whole point and you have pressure to spare, use the block. For that, use the carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-10-micron\"\u003eCB2510-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 10\" x 2.5\" Slimline housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x10-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x10-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x10-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x10-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn taste and smell.\u003c\/strong\u003e Carbon is spent when chlorine taste or odour comes back at the tap. There is no visual indicator — a spent carbon cartridge looks identical to a new one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual interval, or sooner on heavily chlorinated supply. Carbon does not last indefinitely simply because the flow is still good.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAfter any long idle period.\u003c\/strong\u003e A wet carbon cartridge left standing for months is somewhere bacteria can grow. If the house or holiday place has been shut up over winter, change it rather than trusting it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-PC2510-10, model PC2510-10, Puretec DP101 equivalent, carbon impregnated pleated cartridge, combination sediment and carbon filter. Also searched as 10 inch x 2.5 inch drinking water cartridge, slimline water filter cartridge, 10 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, pleated carbon cartridge 10 micron, slimline replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-PC2510-10 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833111003325,"sku":"FC-PC2510-10","price":43.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/pleated-carbon-drinking-water-cartridge-10-micron-x-2-5-slimline-pc2510-filter-cartridges-909.webp?v=1785375785"},{"product_id":"water-filter-cartridge-pleated-carbon-2-5x20-10-micron","title":"Pleated Carbon Drinking Water Cartridge 10 Micron - 20\" x 2.5\" Slimline - PC2520-10","description":"\u003c!-- HASP-WFC :: FC-PC2520-10 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003ePleated Carbon Drinking Water Cartridge — 10 Micron — 20\" x 2.5\" Slimline\u003c\/h3\u003e\n\u003cp\u003eA 10 micron pleated carbon drinking water cartridge in the 20\" x 2.5\" Slimline size — 508mm long, 63–70mm outside diameter. Model \u003cstrong\u003ePC2520-10\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-PC2520-10\u003c\/strong\u003e. It drops straight into any housing built for a standard 2½\" x 20\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e508mm (nominal 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e63–70mm (nominal 2.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline (also written 2½\" x 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePleated Carbon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePC2520-10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 2½\" x 20\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call this the 20 inch slimline size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — #20 Slim Line and 3G Standard Series housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater and bore water on single-housing systems, and as a polishing pre-filter ahead of a reverse osmosis unit. Because the media is non-cellulose it resists bacterial attack, which is what makes it suitable for unchlorinated supply where a cellulose pleated cartridge would not be.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-PC2520-10 — model PC2520-10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e DP Series (Dual-Purpose carbon-impregnated pleated)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDP102\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThere is no direct Pentek equivalent to a carbon-impregnated pleated cartridge in this format. The Puretec DP Series is the true cross-reference. If you cannot get either, the usual substitute is a pleated sediment cartridge in the first housing plus a carbon block in the second.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e20\" x 2.5\" Slimline\u003c\/strong\u003e — 508mm long, 63–70mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A tank-fed house at Pearcedale, VIC. Through the clear sump the cartridge looks slim, so the owner orders a 10 inch. The vernier across the end cap reads 64.1mm — slimline, correct — but the tape reads 505mm. It was a 20 inch slimline all along. The 10 inch would have sat in the bottom of the sump with about 260mm of open water above it, and everything would have run straight past the media unfiltered.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 10 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x10-10-micron\"\u003ePC2510-10 — $43\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x10-10-micron\"\u003ePC4510-10 — $104\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x20-10-micron\"\u003ePC4520-10 — $187\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eThe standard rating for carbon cartridges — open enough to keep flow up while the carbon does the actual work.\u003c\/p\u003e\n\u003cp\u003ePleated Carbon is made in 10 micron only. If you need a finer or coarser sediment cut than that, run a sediment cartridge in the first housing and this one second — \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-1-micron\"\u003e1 micron melt blown\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-50-micron\"\u003e50 micron melt blown\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat pleated carbon media does\u003c\/h3\u003e\n\u003cp\u003ePleated media impregnated with activated carbon — sediment removal and chlorine reduction in one cartridge, at a far lower pressure drop than a solid carbon block.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt will not strip chlorine as hard as a solid carbon block of the same size. If chlorine reduction is the whole point and you have pressure to spare, use the block. For that, use the carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-10-micron\"\u003eCB2520-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 20\" x 2.5\" Slimline housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-2-5x20-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-2-5x20-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-2-5x20-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x20-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn taste and smell.\u003c\/strong\u003e Carbon is spent when chlorine taste or odour comes back at the tap. There is no visual indicator — a spent carbon cartridge looks identical to a new one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual interval, or sooner on heavily chlorinated supply. Carbon does not last indefinitely simply because the flow is still good.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAfter any long idle period.\u003c\/strong\u003e A wet carbon cartridge left standing for months is somewhere bacteria can grow. If the house or holiday place has been shut up over winter, change it rather than trusting it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-PC2520-10, model PC2520-10, Puretec DP102 equivalent, carbon impregnated pleated cartridge, combination sediment and carbon filter. Also searched as 20 inch x 2.5 inch drinking water cartridge, slimline water filter cartridge, 20 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, pleated carbon cartridge 10 micron, slimline replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-PC2520-10 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833111036093,"sku":"FC-PC2520-10","price":75.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/pleated-carbon-drinking-water-cartridge-10-micron-20-x-2-5-slimline-pc2520-filter-cartridges-742.webp?v=1785375788"},{"product_id":"water-filter-cartridge-pleated-carbon-4-5x10-10-micron","title":"Pleated Carbon Drinking Water Cartridge 10 Micron - 10\" x 4.5\" Big Blue - PC4510-10","description":"\u003c!-- HASP-WFC :: FC-PC4510-10 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003ePleated Carbon Drinking Water Cartridge — 10 Micron — 10\" x 4.5\" Big Blue\u003c\/h3\u003e\n\u003cp\u003eA 10 micron pleated carbon drinking water cartridge in the 10\" x 4.5\" Big Blue size — 248mm long, 114mm outside diameter. Model \u003cstrong\u003ePC4510-10\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-PC4510-10\u003c\/strong\u003e. It drops straight into any housing built for a standard 4½\" x 9¾\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e248mm (nominal 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e114mm (nominal 4.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue (also written 4½\" x 9¾\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePleated Carbon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePC4510-10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 4½\" x 9¾\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call the 4.5 inch format \u003cstrong\u003eMaxiPlus\u003c\/strong\u003e, so a MaxiPlus 10 housing takes this cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Big Blue 10 inch housings, 3\/4 inch and 1 inch FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater and bore water on single-housing systems, and as a polishing pre-filter ahead of a reverse osmosis unit. Because the media is non-cellulose it resists bacterial attack, which is what makes it suitable for unchlorinated supply where a cellulose pleated cartridge would not be.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-PC4510-10 — model PC4510-10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e DP Series (Dual-Purpose carbon-impregnated pleated)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDP10MP1\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThere is no direct Pentek equivalent to a carbon-impregnated pleated cartridge in this format. The Puretec DP Series is the true cross-reference. If you cannot get either, the usual substitute is a pleated sediment cartridge in the first housing plus a carbon block in the second.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e10\" x 4.5\" Big Blue\u003c\/strong\u003e — 248mm long, 114mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A rainwater line at Officer, VIC, feeding the house and a WWDG swim spa fill point. The cartridge is a squat blue drum, nothing like a slimline. The vernier across the end cap reads 113.6mm and the tape reads 250mm — 10 inch x 4.5 inch, a Big Blue 10. Drop a slimline cartridge into that housing and it sits in a 25mm annular gap all the way around, so most of the water walks straight past the media.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 10 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x10-10-micron\"\u003ePC2510-10 — $43\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x20-10-micron\"\u003ePC2520-10 — $75\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x20-10-micron\"\u003ePC4520-10 — $187\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eThe standard rating for carbon cartridges — open enough to keep flow up while the carbon does the actual work.\u003c\/p\u003e\n\u003cp\u003ePleated Carbon is made in 10 micron only. If you need a finer or coarser sediment cut than that, run a sediment cartridge in the first housing and this one second — \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-1-micron\"\u003e1 micron melt blown\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-50-micron\"\u003e50 micron melt blown\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat pleated carbon media does\u003c\/h3\u003e\n\u003cp\u003ePleated media impregnated with activated carbon — sediment removal and chlorine reduction in one cartridge, at a far lower pressure drop than a solid carbon block.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt will not strip chlorine as hard as a solid carbon block of the same size. If chlorine reduction is the whole point and you have pressure to spare, use the block. For that, use the carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-10-micron\"\u003eCB4510-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 10\" x 4.5\" Big Blue housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x10-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x10-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x10-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x10-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn taste and smell.\u003c\/strong\u003e Carbon is spent when chlorine taste or odour comes back at the tap. There is no visual indicator — a spent carbon cartridge looks identical to a new one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual interval, or sooner on heavily chlorinated supply. Carbon does not last indefinitely simply because the flow is still good.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAfter any long idle period.\u003c\/strong\u003e A wet carbon cartridge left standing for months is somewhere bacteria can grow. If the house or holiday place has been shut up over winter, change it rather than trusting it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-PC4510-10, model PC4510-10, Puretec DP10MP1 equivalent, carbon impregnated pleated cartridge, combination sediment and carbon filter. Also searched as 10 inch x 4.5 inch drinking water cartridge, big blue water filter cartridge, 10 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, pleated carbon cartridge 10 micron, big blue replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-PC4510-10 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833111068861,"sku":"FC-PC4510-10","price":104.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/pleated-carbon-drinking-water-cartridge-10-micron-x-4-5-big-blue-pc4510-filter-cartridges-314.webp?v=1785375792"},{"product_id":"water-filter-cartridge-pleated-carbon-4-5x20-10-micron","title":"Pleated Carbon Drinking Water Cartridge 10 Micron - 20\" x 4.5\" Big Blue - PC4520-10","description":"\u003c!-- HASP-WFC :: FC-PC4520-10 :: rev WFC-2.0 :: begin --\u003e\n\u003ch3\u003ePleated Carbon Drinking Water Cartridge — 10 Micron — 20\" x 4.5\" Big Blue\u003c\/h3\u003e\n\u003cp\u003eA 10 micron pleated carbon drinking water cartridge in the 20\" x 4.5\" Big Blue size — 508mm long, 114mm outside diameter. Model \u003cstrong\u003ePC4520-10\u003c\/strong\u003e, HASP part number \u003cstrong\u003eFC-PC4520-10\u003c\/strong\u003e. It drops straight into any housing built for a standard 4½\" x 20\" cartridge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eShipped from VIC, NSW, QLD and WA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is for one cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e508mm (nominal 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e114mm (nominal 4.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrade size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue (also written 4½\" x 20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePleated Carbon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnd style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen double ended (DOE), no gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePC4520-10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eCartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSystems this suits\u003c\/h3\u003e\n\u003cp\u003eThese are industry-standard 4½\" x 20\" cartridges. They fit any housing built to that\nsize, regardless of who badged it. Known-good systems include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60),\nEcotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6,\nHybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call the 4.5 inch format \u003cstrong\u003eMaxiPlus\u003c\/strong\u003e, so a MaxiPlus 20 housing takes this cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair \/ Pentek\u003c\/strong\u003e — Big Blue 20 inch housings, 3\/4 inch and 1 inch FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric and house-brand housings\u003c\/strong\u003e — clear or blue sump, screw-off canister with a\npressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters,\ntank pre-filters ahead of a UV steriliser, and RO pre-filter stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it will not fit.\u003c\/strong\u003e Puretec \u003cstrong\u003eZ Series\u003c\/strong\u003e systems take Quick Twist\ncartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page\nsuits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the\ncartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type\nentirely. Open the sump and look before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited to:\u003c\/strong\u003e Rainwater and bore water on single-housing systems, and as a polishing pre-filter ahead of a reverse osmosis unit. Because the media is non-cellulose it resists bacterial attack, which is what makes it suitable for unchlorinated supply where a cellulose pleated cartridge would not be.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-reference — alternative part numbers\u003c\/h3\u003e\n\u003cp\u003eSame size, same media, same duty. Match on \u003cstrong\u003esize first, micron second\u003c\/strong\u003e — micron ratings are nominal and each manufacturer measures them slightly differently.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent part number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eHASP\u003c\/strong\u003e (this listing)\u003c\/td\u003e\n\u003ctd\u003eFC-PC4520-10 — model PC4520-10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003ePuretec\u003c\/strong\u003e DP Series (Dual-Purpose carbon-impregnated pleated)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDP10MP2\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThere is no direct Pentek equivalent to a carbon-impregnated pleated cartridge in this format. The Puretec DP Series is the true cross-reference. If you cannot get either, the usual substitute is a pleated sediment cartridge in the first housing plus a carbon block in the second.\u003c\/p\u003e\n\u003cp\u003eThe same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Two-Number Housing Rule (rev. TNH-1.0)\u003c\/h3\u003e\n\u003cp\u003eA drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.\u003c\/li\u003e\n\u003cli\u003ePull the old cartridge out and measure it \u003cstrong\u003eend to end\u003c\/strong\u003e. Roughly \u003cstrong\u003e248mm\u003c\/strong\u003e is a 10 inch. Roughly \u003cstrong\u003e508mm\u003c\/strong\u003e is a 20 inch.\u003c\/li\u003e\n\u003cli\u003eMeasure the \u003cstrong\u003eoutside diameter\u003c\/strong\u003e across the end cap. \u003cstrong\u003e63–70mm\u003c\/strong\u003e is a slimline (nominal 2.5 inch). \u003cstrong\u003e114mm\u003c\/strong\u003e is a Big Blue (nominal 4.5 inch).\u003c\/li\u003e\n\u003cli\u003eThose two numbers name the cartridge. This one is \u003cstrong\u003e20\" x 4.5\" Big Blue\u003c\/strong\u003e — 508mm long, 114mm outside diameter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWorked example.\u003c\/strong\u003e A Big Blue housing on the fill manifold for a WWDG swim spa at Officer, VIC. Through the blue sump it looks like a tall slimline. The vernier across the end cap reads 113.6mm and the tape reads 507mm, so it is 20 inch x 4.5 inch — a Big Blue 20. A slimline cartridge dropped into that housing leaves a 25mm annular gap all the way around and filters almost nothing.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIf yours measures something else\u003c\/h3\u003e\n\u003cp\u003eSame media, same 10 micron rating, in all four housing sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIf the old cartridge measures\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x10-10-micron\"\u003ePC2510-10 — $43\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 63–70mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 2.5\" Slimline\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-2-5x20-10-micron\"\u003ePC2520-10 — $75\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e248mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x10-10-micron\"\u003ePC4510-10 — $104\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e508mm long x 114mm dia\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eChoosing the micron rating\u003c\/h3\u003e\n\u003cp\u003eThe standard rating for carbon cartridges — open enough to keep flow up while the carbon does the actual work.\u003c\/p\u003e\n\u003cp\u003ePleated Carbon is made in 10 micron only. If you need a finer or coarser sediment cut than that, run a sediment cartridge in the first housing and this one second — \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-1-micron\"\u003e1 micron melt blown\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-50-micron\"\u003e50 micron melt blown\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eLower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat pleated carbon media does\u003c\/h3\u003e\n\u003cp\u003ePleated media impregnated with activated carbon — sediment removal and chlorine reduction in one cartridge, at a far lower pressure drop than a solid carbon block.\u003c\/p\u003e\n\u003ch3\u003eWhat it will not do\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt will not strip chlorine as hard as a solid carbon block of the same size. If chlorine reduction is the whole point and you have pressure to spare, use the block. For that, use the carbon block cartridge in the same housing — \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-10-micron\"\u003eCB4520-10\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four media in this range share the same 20\" x 4.5\" Big Blue housing, so you can change what a housing does just by changing the cartridge in it: \u003ca href=\"\/products\/water-filter-cartridge-melt-blown-sediment-4-5x20-5-micron\"\u003emelt blown sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-pleated-sediment-4-5x20-5-micron\"\u003epleated sediment\u003c\/a\u003e, \u003ca href=\"\/products\/water-filter-cartridge-carbon-block-4-5x20-10-micron\"\u003ecarbon block\u003c\/a\u003e or \u003ca href=\"\/products\/water-filter-cartridge-pleated-carbon-4-5x20-10-micron\"\u003epleated carbon\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy a spa parts company stocks drinking water cartridges\u003c\/h3\u003e\n\u003cp\u003eFill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.\u003c\/p\u003e\n\u003cp\u003eA cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.\u003c\/p\u003e\n\u003cp\u003eThese are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our \u003ca href=\"\/collections\/cartridge-filters-complete\"\u003epool and spa cartridge filters\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn taste and smell.\u003c\/strong\u003e Carbon is spent when chlorine taste or odour comes back at the tap. There is no visual indicator — a spent carbon cartridge looks identical to a new one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix months\u003c\/strong\u003e is the usual interval, or sooner on heavily chlorinated supply. Carbon does not last indefinitely simply because the flow is still good.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAfter any long idle period.\u003c\/strong\u003e A wet carbon cartridge left standing for months is somewhere bacteria can grow. If the house or holiday place has been shut up over winter, change it rather than trusting it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrite the date on the housing\u003c\/strong\u003e in permanent marker when you fit it. Everyone believes they will remember. Nobody does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAlso sold as \/ common search terms\u003c\/h3\u003e\n\u003cp\u003eFC-PC4520-10, model PC4520-10, Puretec DP10MP2 equivalent, carbon impregnated pleated cartridge, combination sediment and carbon filter. Also searched as 20 inch x 4.5 inch drinking water cartridge, big blue water filter cartridge, 20 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, pleated carbon cartridge 10 micron, big blue replacement cartridge.\u003c\/p\u003e\n\u003c!-- HASP-WFC :: FC-PC4520-10 :: rev WFC-2.0 :: end --\u003e","brand":"HASP","offers":[{"title":"Default Title","offer_id":47833119293629,"sku":"FC-PC4520-10","price":187.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/pleated-carbon-drinking-water-cartridge-10-micron-20-x-4-5-big-blue-pc4520-filter-cartridges-443.webp?v=1785375793"}],"url":"https:\/\/heaterandspaparts.com.au\/collections\/drinking-water-filters.oembed","provider":"Heater and Spa Parts","version":"1.0","type":"link"}