Specs: Model: M-T1812A200 Total Length: 11.75 In. Membrane Length: 10.35 In. Diameter: 1.95 In. Flow Rate: 200GPD / 740 LPD Material: TFC (Thin Film Composite) Stabilized Salt Rejection: 98% Certified to NSF/ANSI 58 for the reduction of Arsenic, Barium, Cadmium, Chromium (Hexavalent), Chromium (Trivalent), Copper, Turbidity, Fluoride, Lead, Radium 226/228, Selenium, and TDS. Applications: In-Home drinking, cooking, plant, and pet water. Office, lab, restaurant, bar, coffee café, or any other point of use application that requires pure, clean water. Universal Standard Size ~1.8” x 12” membrane yields up to 200 GPD. Suitable for most reverse osmosis/deionization (RO / DI) systems such as iSpring, APEC, LiquaGen, APEC, Aquatic Life, Express Water, Axeon, Global Water, Microline, COSTWAY, Dow Filmtec, GE, Watts Premier and all other standard under-sink RO systems. Frequently Asked Questions: Is this filter compatible with my system? 95% of RO membranes are universal size (2”x12”) and will fit standard membrane housing for RO systems. Can this be used for brackish or sea water? No, this membrane is designed for tap water use. We offer other membranes for these special applications. How long does the membrane last? Many companies claim their membranes last for years. Industry standards suggest replacing your RO membrane every 12 months will preserve the purity and flow rate of your water system.