Sta-Rite 20.125-in x 25.5-in dia 259-sq ft Pool Cartridge Filter

Make sure your pool water is swimmer ready with this Sta Rite 25022 0203S and 25021 0202S System 3 Pool filter set. The Sta Rite 25021 0202S is a replacement cartridge filter is 191 sq. ft, and it works with the Sta Rite System 3. The Sta Rite 25022 0203S is the larger, outer filter, and it's 259 sq. ft. Note: This listing is for both the 191 sq. ft. Inner Replacement Module and 259 sq. ft. Outer Replacement Module for S8M150.