Filmtec 50 GPD TFC Membrane

50 GPD TFC Membrane 1.75" x 11.75"  Replacement Reverse Osmosis Membrane Fits Standard Housings for a Variety of Brands of Reverse Osmosis Systems. Filmtec by DOW has the highest rejection levels & longest life of any membrane. The Most widely used membrane in Reverse Osmosis Technology Worldwide. Replaces Desal Membrane and Numerous others call if your not sure. If you're unsure of your membrane flow rate it is usually stamped on the side of the membrane when you remove it from the housing. TFC membranes must have a carbon pre-filter when using municipal chlorinated water such as a CTO2 carbon block filter. No other membrane lasts as long and resists fouling like a Dow Filmtec.