The Unicel C-5405 R is a pool and spa water filter cartridge that is the correct compatible replacement for the following filters:
The Unicel C-5405 Comp. Pool & Spa Filter Cartridge has an outer diameter of 5 7/8 inches, with a length of 15 5/8 inches. This Unicel spa filter has a closed top with a crescent handle, and an open bottom with a diameter of 1 3/4 inches and a male slip style connector. This Unicel C-5405 filter contains 50 square feet of filter media.