Key Lander 2 Piece Filter Cartridge Replaces Unicel: C-4325， Filbur: FC-1220， Pleatco: PA225-4， Hayward CX225-RE， Micro Star: Clear C225<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Top &amp; bottom end cap: 2 1/16" inner diameter</li><li>Filter area: 25 square feet</li><li>Pleat count: 138</li><li>Filter media: Nonwoven polyester</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51mJTTw2VZL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41UFAFXq1ML.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41kPATxIFYL.jpg" noproxy>