Unicel C-7303 Replacement Filter Cartridge for 150 Square Foot Advantage Mfg<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Diameter: 7 1/4-inch; length: 28 13/16-inch</li><li>Top end cap: open with step， 2 15/16-inch inner diameter; bottom end cap: open with step， 2 15/16-inch inner diameter</li><li>Pleat count: 189; filter media: 3-ounce reemay 2033; filter area: 150 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/31TxnKyYRyL.jpg" noproxy>