FILMTEC BW30 PRO-4040 is the industry standard for reliable operation and production of high quality water Model: FILMTEC BW30 PRO-4040 (Replaces BW30-4040) Made by DuPont (formerly by Dow) Original, sealed and brand new Dimensions: 4" x 40 (Diameter x Length) Feed Spacer Thickness: 34 mil Permeate Flow Rate: 2,400 gallons per day (9.1 m3 per day) Stabilized Salt Rejection: 99.5% Membrane Type: Polyamide Thin Film Composite Outer Shell: Hard Fiberglass Applied Pressure: 125 psi Maximum Operating Temperature: 113ºF (45ºC) Maximum Operating Pressure: 600 psi (41 bar) Maximum Feed Flow Rate: 16 gpm (3.6 m3/h) Maximum Pressure Drop: 15 psig (1.0 bar) Maximum Feed Silt Density Index: SDI 5 Free Chlorine Tolerance: <0.1 ppm pH Range, Continuous Operation: 2-11 pH Range, Short-Term Cleaning: 1-13 Need help choosing your membrane? Feel free to message us Suntra in an authorized distributor of Filmtec Reverse Osmosis Membranes