Don't run the risk of having your outdoor swimming pool not functioning properly. To ensure things go as planned, use the Pentair R173215 100 Square Feet Cartridge Element for Pool and Spa Filters.This cartridge element is designed for use with the Pentair Clean and Clear above ground pool and spa filters and can also fit the Pentair Clean and Clear/Predator pool and spa cartridge filter. It comes with 100 square feet and measures 10 x 10 x 23.62 inches.Get the most out of your swimming pool by using the Pentair R173215 100 Square Feet Cartridge Element for Pool and Spa Filters.