Unicel C-7447 Replacement Filter Cartridge for 50 Square Foot Hayward CX470XRE, Sta-rite PRC 50 Diameter: 7-inch; length: 14 3/16-inch Top end cap: open with molded gasket, 3 0/0-inch inner diameter; bottom end cap: open with molded gasket, 3 0/0-inch inner diameter Pleat count: 152; filter media: 4-ounce reemay 2040; filter area: 50 square feet Get more efficient filtration and better water clarity with Unicel filters Longer time between cleanings; meets oem specifications