Pleatco PA75-M Replacement Cartridge for Hayward Star-Clear C750 (MICROBAN), 1 Cartridge Replacement cartridge for Hayward star-clear 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 29-3/8-inches in length and 3-inches of top and bottom hole diameter