The Unicel C-5302 R is a pool and spa water filter cartridge that is the correct compatible replacement for the following filters:
The Unicel C-5302 Comp. Pool & Spa Water Filter has an outer diameter of 2 3/4 inches, with a length of 3 11/16 inches. This Unicel spa filter has a closed top with a crescent handle, and an open bottom with a diameter of 3 1/2 inches. This Unicel C-5302 filter contains 50 square feet of filter media.