* GE DESAL TFM-18 Residential Encapsulated RO Membrane Element delivers a maximum output of 18 gallons per day * This membrane is capable of lowering barium, selenium, cadmium, copper, fluoride, lead, mercury, nitrate, chromium III & VI nitrite, radium, and TDS. * GE DESAL Residential Encapsulated Membranes produce healthier, great water for drinking and cooking * The GE DESAL TFM-18 Encapsulated RO Membrane is a Thin Film Composite Membrane with a Control Valve and Flow Control * The GE Desal TFM-18-CV Encapsulated RO Membrane is not chlorine resistant * NSF/ANSI 58 Certified * Average NaCl Rejection: 98.0% Permeate Flow 18 Gallons Per Day @ 65 PSI