Unicel 7000 Series 75 sq. ft. Replacement Filter Cartridge for Caldera Spas | C-7375 C8425 The air relief assembly vents

The air relief assembly vents trapped air from the filter tank

Use during the start-up process of the Leisure Time® Simple Spa Care® Program

Brand Equipment Line Model / Part Number Hayward SwimClear Single Element Cartridge Filter C100S Compatibility is based on Hayward parts documentation and available OEM records

The Hayward Barb Hose Connector (SPX1091Z2PAK2) is the OEM replacement barb hose fitting for Hayward ProSeries sand filters

Unicel 7000 Series 75 sq. ft. Replacement Filter Cartridge for Caldera Spas | C-7375 C8425 The air relief assembly ventsThe Unicel C 7375 is a 7000 Series 75 sq. ft. replacement filter cartridge engineered specifically for Caldera Spas. Built with 216 pleats of 3 oz. Reemay 2033 polyester media and a precision formed 7" outer diameter, it delivers the filtration area and dimensional accuracy that Caldera filter housings require. The semi circular handle top and open bottom with 2 11 16" inner diameter match the OEM geometry exactly so it drops in cleanly and seals