The Unicel C-8350RA R is a pool and spa water filter cartridge that is the correct compatible replacement for the following filters:
The Unicel C-8350RA Comp. Replacement Spa Filter has an outer diameter of 2 3/4 inches, with a length of 3 11/16 inches. This Unicel pool filter has an open top with a diameter of 1 9/10 with step, and an open bottom with a diameter of 2 3/8 inches with slot. This Unicel C-8350RA filter contains 30 square feet of Microban filter media.