Pleatco PMA45-2004R-M Replacement Cartridge for Master Spas EP (New Style) (MICROBAN)， 1 Cartridge<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Replacement cartridge for master spas new style EP-cylinder model</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-8341 and filbur FC-1007M; made in usa; microban inhibits the growth of stain and odor causing microbes like bacteria and algea</li><li>Measures 8-1/4-inches in diameter by 6-7/8-inches in length and 4-1/16-inches in top and bottom hole diameter</li></ul></div><img src="http://ecx.images-amazon.com/images/I/517Pt3rgQ7L.jpg" noproxy>