Unicel C-7633 Replacement Filter Cartridge for 33 Square Foot Purex CF-33/100<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Diameter: 7-inch; length: 14-inch</li><li>Top end cap: open， 2 15/16-inch inner diameter; bottom end cap: open， 2 15/16-inch inner diameter</li><li>Pleat count: 99; filter media: 6-ounce reemay 2470; filter area: 33 square feet</li><li>Get more efficient filtration and better water clarity with Unicel filters</li><li>Longer time between cleanings; meets oem specifications</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31wzrf2X9UL.jpg" noproxy>