Filbur FC-3965 Antimicrobial Replacement Filter Cartridge for Caldera 100 Pool and Spa Filter<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>High performance pleated polyester media</li><li>Reinforced antimicrobial end caps</li><li>Extruded pvc center cores</li><li>Break resistant bands</li><li>Molded in threads， no loose inserts</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41T-IM%2BHItL.jpg" noproxy>