The Pentair R173215 R is a compatible replacement for the following pool and spa filters:
The Pentair R173215 Comp. Pool & Spa Filter Cartridge has a diameter of 10 1/16 inches, and a length of 23 5/8 inches. This spa filter cartridge has open top and bottom holes with diameters of 6 inches. This pool filter replacement will keep the water in your pool or spa clean and clear.