The Unicel 2540-381 R is a compatible replacement for the following pool and spa filters:
The Unicel 2540-381 Comp. Replacement Pool Filter has a diameter of 8 inches, and a length of 15 1/2 inches. This spa filter has a closed top with a crescent handle, and an open bottom with a diameter of 2 inches and with Male Pipe Threads (MPT). This pool filter cartridge will keep the water in your pool or spa clean and clear.