Sta-Rite Lid, 150 & 200 Sq Ft - 178745Z Sta-Rite Pool Heater In reference to pool covers

In reference to pool covers this is a measurement of the thickness of the bonded material layers between the bubbles and is NOT referring to the size of the bubble

Hayward HCC4000 Brochure

then automatically evacuates water for effortless removal from the pool

Hayward Item Code: W3H400FDP

Hayward TriStar 900 VS Omni Brochure

Sta-Rite Lid, 150 & 200 Sq Ft - 178745Z Sta-Rite Pool Heater In reference to pool coversProduct Description Sta Rite Posi Clear RP 150 & 200 Sq Ft Lid for ALL Models. Pentair Item Code: 178745Z Features Compatible with ALL Sta Rite Posi Clear RP Cartridge Filters: 160352, and 160353. NOTE: All replacement parts are Final Sale.