Unicel C-7459 Replacement Filter Cartridge for 85 Square Foot Jandy CL340 Diameter: 7-inch; length: 27-inch Top end cap: open, 3 0/0-inch inner diameter; bottom end cap: open, 3 0/0-inch inner diameter Pleat count: 130; filter media: 4-ounce reemay 2040; filter area: 85 square feet Get more efficient filtration and better water clarity with Unicel filters Longer time between cleanings; meets oem specifications