Hydrologic Big Boy Extra High Flow Water Filter System, 420 GPHUltra high capacity instant dechlorinator. Removes 99% of chlorine and 90% of sediment. Comes with cleanable sediment filter and in out pressure gauges to monitor when to change filters. Can be used as a whole house filter or standalone. Filter capacity of 25,000 gallons. High flow rate of 7 gallons per minute or 420 gallons per hour Whole house filter or stand alone (with optional garden hose connection kit HL26010) 25,000 gallon capacity Removes 99%