Unicel 6CH-960 (2 Pack) Jacuzzi Premium Replacement Pool Spa Filter Cartridge Diameter: 6 3/4-inch; length: 15 1/2-inch Top end cap: semi-circular handle, 0-inch inner diameter; bottom end cap: 2-inch sae thread, 0-inch inner diameter Pleat count: 113; filter media: 3-ounce reemay 2033; filter area: 52 square feet Get more efficient filtration and better water clarity with unicel filters Longer time between cleanings; meets oem specifications