The Unicel C-7641 R is a pool and spa water filter cartridge that is the correct compatible replacement for the following filters:
The Unicel C-7641 Comp. Pool & Spa Water Filter has an outer diameter of 7 inches, with a length of 13 3/8 inches. This Unicel pool filter has a closed top with a handle, and an open bottom with a diameter of 3 inches. This Unicel C-7641 filter contains 40 square feet of filter media.