The K2328-JJ is perfect as a pre RO filter out and has a waft rate of 0.5 gpm and a 1000 gallon capacityThe Omnipure K2328-JJ 2″ x 6″ T28 GAC Carbon Inline Cartridge is a 6″ granulated activated carbon filter out cartridge that reduces chlorine odor and style. The Omnipure K2328-JJ has fast-connect 1/four” feminine threaded fittings for simple installation. An ideal to be used with ice makers, refrigerators, RO systems, and beverage systems.