The Unicel C-7418 R is a pool and spa water filter cartridge that is the correct compatible replacement for the following filters:
The Unicel C-7418 Comp. Replacement Pool & Spa Filter has an outer diameter of 7 1/2 inches, with a length of 20 13/16 inches. This Unicel pool filter has an open top and bottom with both having a diameter 2 15/16. This Unicel C-7418 filter contains 100 square feet of filter media.