Unicel 4000 Series 20 sq. ft. Replacement Filter Cartridge | 4CH-925 C3310AM swimmers must not be allowed

swimmers must not be allowed into the water

filter on units manufactured after November 1998 only

replacement filter cartridge engineered to exact OEM tolerances

concentrated dichlor granular chlorine solution that effectively sanitizes and shocks hot spa water to help keep it clean and clear

Espree II 5475000   Emerald Spas       Seven Seas       (This is not an exhaustive list

Unicel 4000 Series 20 sq. ft. Replacement Filter Cartridge | 4CH-925 C3310AM swimmers must not be allowedThe Unicel 4000 Series 4CH 925 is a 20 sq. ft. replacement filter cartridge engineered for top load filter systems built by Strong Industries. With 190 precision pleated folds of 3 oz. Reemay 2033 spunbond polyester media, this cartridge delivers consistent water clarity and long lasting filtration performance in a compact 7 1 4" profile. Specifications Filter Area 20 sq. ft. Length 7 1 4" Outer Diameter 4 5 8" Top Inner Diameter N A Bottom Inner