The Unicel C-4610 R is a pool and spa water filter cartridge that is the correct compatible replacement for the following filters:
The Unicel C-4610 Comp. Pool & Spa Water Filter has an outer diameter of 4 1/2 inches, with a length of 9 3/4 inches. This Unicel pool filter has an open top with a diameter of 1 1/16 inches, and an open bottom with a diameter of 1 1/4 inches and having Society of Automotive Engineers (SAE) threads. This Unicel C-4610 filter contains 15 square feet of filter media.