The Waterway 35 R is a compatible replacement for the following pool and spa filters:
The Waterway 35 Comp. Replacement Spa Filter Cartridge has a diameter of 4 15/16 inches, and a length of 9 1/4 inches. This spa filter has both an open top and bottom, and each has a diameter of 2 1/8 inches. This pool filter replacement will keep the water in your pool or spa clean and clear.