The LA Spas 5 x 8 1/2 R is a compatible replacement for the following pool and spa filter:
The LA Spas 5" x 8 1/2" - Comp. Pool and Spa Filter has a diameter of 5 3/8 inches and is 8 1/2 inches long. This LA Spas pool filter has a closed top and 3 inch Male Pipe Threads (MPT) on the bottom. This LA Spas pool filter cartridge contains 30 square feet of filter media. This LA Spas filter will keep your pool or spa water clean and clear.