Pleatco Hayward C-570, SwimClear C3020, Super-Star-Clear C3000, C3000S (stainless steel) Sta-Rite PRC 75 (Microban), 1 Cartridge Hayward c-570, swimclear c3020, super-star-clear c3000, c3000s (stainless steel) sta-rite prc 75 50 Percent open ABS free flow cores maximize water flow through reemay filter media Antimicrobial end caps resist chlorine degradation and provide support to filter material for a longer life span Replaces unicelC-7676 and filbur FC-1250 ; made in usa; microban inhibits the growth of stain and odor causing microbes like bacteria and algae Measures 7-inches in diameter by 19-3/4-inches in length and 3-inches of top and bottom hole dimeter