Pleatco PA40-M Replacement Cartridge for Hayward C-410, Easy Clear C400 (MICROBAN), 1 Cartridge Replacement cartridge for Hayward c-410, easy clear c400 models 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-7442 and filbur FC-1228 ; made in usa; microban inhibits the growth of stain and odor causing microbes like bacteria and algae Measures 7-inches in diameter by 14-1/16-inches in length and 3-inches of top and bottom hole diameters