Originally Beige or Black. Davey CF & Monarch EcoPure Series Cartridge Filter Lid. Fits the CF Series Cartridge Filters sizes 50, 75, 100, & 150. Part number 4 in diagram. Do not confuse with the later & larger lid listed here. Suits this locking ring. Also suits some older Enduro, SpaQuip, Hurlcon and Aquaswim cartridge filters.
- Outside Diameter: 220-224mm
- Inside Lip Diameter (thread): 210-214
- O-ring not included