S7M120 System 3 Outer Pool Filter Compatible with 25021-0200S & 25022-0201S, Replacement for Sta-Rite System 3, SR300 Pool Filter Cartridge, 200 Sq.Ft. Filtration AreaREPLACEMENT FILTER Outer Filter: Replaces Sta Rite 25022 0201S. SIZE Outer Filter: Length: 18 3 4", outside diameter: 16 1 2", filtration area: 200 sq. ft. SUPERIOR FILTRATION Our advanced point bond media has tighter filtration capabilities compared to trilobal media material or classic non woven filter media. That means a superior filtration of biomass, dirt, debris, hair, leaves and critters to help keep your pool or spa aseptic, clean and safe for