Unicel FG-1248 Replacement Filter Grid for Purex Diameter: not available; length: 25 3/8-inch; width: 10 3/4-inch Top end cap: not available, 0-inch inner diameter; bottom end cap: not available, 0-inch inner diameter Pleat count: not available; filter media: not available; filter area: 48 square feet Get more efficient filtration and better water clarity with Unicel filters Longer time between cleanings; meets oem specifications