Pleatco PA106-M Replacement Cartridge for Hayward SwimClear C-4025 (MICROBAN), 1 Cartridge Replacement cartridge for Hayward swimclear c-4025 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 unicel C-7488 and filbur FC-1226; made in usa; microban inhibits the growth of stain and odor causing microbes like bacteria and algae Measures 7-inches in diameter by 25-1/2-inches in length and 3-inches of top and bottom hole diameters