Englefield Kohler spa bath air injector/ air jet caps. Now only available in White. Used on Englefield / Kohler branded spa baths during timeframe of ~1990-2005.
23mm diameter caps. The brass body the cap clips onto has a diameter of 17.8mm
Caps between brands and models are not interchangeable. Ensure you order correctly. Compare measurements and photos.
engt1406-w3-1
About whites in baths and fittings.
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