Intex Krystal Clear Cartridge Filter Pump for Above Ground Pools, 330 GPH Pump Flow Rate, 110-120V with GFCI This Krystal Clear Cartridge Filter Pump by Intex is hassle free, and easy to install- simply hook-up the hoses. Release the air trapped inside the filter chamber with the air release valve, and plug the pump in for fresh, clean, filtered pool water. Equipped with the Ground Fault Circuit Interrupter, an added safety feature that shuts off the pump if electrical current is exposed to water. Use with a maximum pool size of 1,018 gallons. This system has a flow rate of 300 gph and a pump flow rate of 330 gph. Includes: 110-120V w/ GFCI. Air release valve. System flow rate: 300 gph (1,136 lph). Pump flow rate: 330 gph (1,250 lph).