Pleatco PA137-M Replacement Cartridge for Hayward Super-Star-Clear C-5500 SwimClear C-5520 (MICROBAN)， 1 Cartridge<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Replacement cartridge for Hayward super-star-clear c-5500， swimclear c-5520 models</li><li>50 Percent open ABS free flow cores maximize water flow through reemay filter media</li><li>Antimicrobial end caps resist chlorine degradation and provide support to filter material for a longer life span</li><li>Replaces unicel C-7490 and filbur FC-1297; made in usa; microban inhibits the growth of stain and odor causing microbes like bacteria and algae</li><li>Measures 7-inches in diameter by 32-3/4-inches in length and 3-inches of top and bottom hole diameters</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31MXBi7EVWL.jpg" noproxy>