Diameter: 8 7/16-inch; length: 18-inch * Top end cap: closed with 3-step edge, 0-inch inner diameter; bottom end cap: open with beveled edge, 2-1/2-inch inner diameter * Pleat count: 201; filter media: 3-ounce reemay 2033; filter area: 125 square feet * Get more efficient filtration and better water clarity with Unicel filters * Longer time between cleanings; meets oem specifications