Keep your above-ground swimming pool clean all season long with the Hydromatic Cartridge Filter System. Constructed from rugged polymer, the tank and base are resistant to corrosion, ensuring that your pool stays clean and clear for many seasons to come. Inside the filter tank is an extra-large filter cartridge that’s designed to provide exceptional filtration and water quality, without backwashing. Two slide valves and a spin lock top make removing and cleaning the cartridge quick and easy. The high-powered pump provides a consistent, energy-efficient performance so you can run your pump less while still maintaining sparkling clean water. 1-year warranty.