Low pressure grade RO element with extended area for brackish waterThe RE4040-BLR commercial RO membrane is designed to filter brackish water under low water pressure conditions. Operating under low water pressures compared to other RO membranes will reduce energy costs while maintaining high performance rates.Specifications:Flow Rate: 1,900 Gallons Per DayDimensions: : 40" X 4"Replace every 24 monthsThin Film Membrane (TFM)