FILMTEC brackish water reverse osmosis membrane elements provide consistent, outstanding system performance in light industrial applications.FILMTEC LE-4040 delivers highest performance at lowest pressure resulting in less energy usage and lower costs.Elements with a hard shell exterior are recommended for systems with multiple-element housings containing three or more membranes, as they are designed to withstand higher pressure drops. Product Name Nominal Active Surface Areaft2 (m2) Permeate Flow Rategpd (m3/d) Stabilized Salt Rejection(%) FILMTEC LE-4040 78 (7.2) 2500 (9.5) 99.0 Permeate flow rate and salt rejection based on the following test conditions: 2000 ppm NaCl, 150 psig (10.3 bar), 77°F (25°C), and 15% recovery. Permeate flow rates for individual elements may vary +/-20%. For the purpose of improvement, specifications may be updated periodically. FILMTEC LE-4040 was previously named FILMTEC BW30LE-4040.