The Unicel C-4350 R is a pool and spa water filter cartridge that is the correct compatible replacement for the following filters:
The Unicel C-4350 Comp. Replacement Pool Water Filter has an outer diameter of 4 5/8 inches, with a length of 23 3/4 inches. This Unicel spa filter has an open top and bottom with both having a diameter of 2 1/8 inches. This Unicel C-4350 filter contains 50 square feet of filter media.