The GRO-75EN #4004425 Membrane is an 75 gpd encapsulated membrane with flow restrictor. 100% dry membrane maximizing shelf life. High rejection stability at high input TDS. TLC ThinLayer Composite membrane. Max Pressure: 125 PSI, Max Temp: 120 degree F, pH: 4-11, Free Chlorine: 0.1 ppm, 2.5 inch x 15.14 inch. The GRO-75EN #4004425 is a great replacement option for the obsolete GE TFM-75, #1223077.