Hayward AquaNaut Wheel Tread - PVXS16PK2-234 Check Valves This vent adapter kit is

This vent adapter kit is to be used under negative pressure which is thru-roof vertically

Advanced Control features including proportional feed

Hayward Item Code: FDXLTER1930

Hayward Star-Clear C250 & C500 cartridge filters provide crystal clear water and have extra cleaning capacity to accommodate pools and spas of all types and sizes

Full Functional Control of Pool

Hayward AquaNaut Wheel Tread - PVXS16PK2-234 Check Valves This vent adapter kit isProduct Description Hayward AquaNaut 200 250 and 400 450 Replacement Wheel Tread for ALL Models. Hayward Item Code: PVXS16PK2 234 Features Genuine Hayward Replacement Wheel Tread. Compatible with ALL Hayward AquaNaut Cleaners: PBS22CST, PBS42CST, PHS21CSTC, PHS41CSTC, W3PHS21CST, and W3PHS41CST.