Unicel C-7641 Replacement Filter Cartridge for 40 Square Foot Skim Filter， Pacific Spa<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Diameter: 7-inch; length: 14 3/4-inch</li><li>Top end cap: semi-circular handle， 0-inch inner diameter; bottom end cap: open， 3 0/0-inch inner diameter</li><li>Pleat count: 115; filter media: 4-ounce reemay 2040; filter area: 40 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/31BRkwPW1bL.jpg" noproxy>