The Unicel UHD-SR135 R is a pool and spa water filter cartridge that is the correct compatible replacement for the following filters:
The Unicel UHD-SR135 Comp. Pool Filter Cartridge has an outer diameter of 8 11/16 inches, with a length of 34 1/2 inches. This Unicel pool filter has an open top and bottom, with both having a diameter of 4 3/16 inches. This Unicel UHD-SR135 filter contains 135 square feet of filter media.