Unicel 9000 Series 150 sq. ft. Replacement Filter Cartridge | C-9441 FG1004 The door alarm has a

The door alarm has a delay switch which allows an adult to pass-through the door without the alarm sounding

Activates when water level reaches 2"

you can improve water clarity and reduce the amount of time and effort needed to maintain your spa

residue from mildew

Inspect the manifold o-ring and collar alignment at every grid service to maintain system integrity and prevent bypass

Unicel 9000 Series 150 sq. ft. Replacement Filter Cartridge | C-9441 FG1004 The door alarm has aThe Unicel C 9441 is a 9000 Series 150 sq. ft. replacement filter cartridge precision engineered to drop directly into the Hayward SwimClear Single Element C150S. With 165 pleats of 4 oz. Reemay 2040 filtration media, it maximizes surface area and service life delivering cleaner water between cleanings and longer intervals before replacement. Specifications Filter Area 150 sq. ft. Length 23 5 16" Outer Diameter 10 5 16" Top Inner Diameter 4" Bottom