The Unicel UHD-SR70 R is a pool and spa water filter cartridge that is the correct compatible replacement for the following filters:
The Unicel UHD-SR70 Comp. Pool Water Filter Cartridge has an outer diameter of 8 11/16 inches, with a length of 18 3/16 inches. This Unicel pool filter has an open top and bottom, with both having a diameter of 4 3/16 inches. This Unicel UHD-SR70 filter contains 70 square feet of filter media.