B004VU8U0M Unicel 6CH-502 Replacement Filter Cartridge for 50 Square Foot Artesian Spas

Make sure this fitsby entering your model number. Diameter: 6 3/4-inch; length: 8-inch Top end cap: semi-circular handle, 0-inch inner diameter; bottom end cap: 2-inch male thread/mpt, 0-inch inner diameter Pleat count: 209; filter media: 3-ounce reemay 2033; filter area: 50 square feet Get more efficient filtration and better water clarity with Unicel filters Longer time between cleanings; meets oem specifications