The Unicel UHD-SR35 R is a pool and spa water filter cartridge that is the correct compatible replacement for the following filters:
The Unicel UHD-SR35 Comp. Pool Filter Replacement has an outer diameter of 8 11/16 inches, with a length of 9 3/4 inches. This Unicel pool filter has an open top and bottom, with both having a diameter of 4 3/16 inches. This Unicel UHD-SR35 filter contains 35 square feet of filter media.