AXEON TE–Series Reverse Osmosis Membrane Elements are a reliable alternative for your residential reverse osmosis system needs. TE–Series Membrane Elements are NSF-58 Certified and are manufactured in a state-of-the-art, ISO-9001 compliant automated rolling facility, providing you with precise and advanced membrane quality that delivers on performance and cost. Features: 100 Gallons Per Day Operates as low as 60 psi TFC (Thin Film Composite) Membrane is for use with non-chlorinated water Individually vacuum tested and sanitized NSF-58 Certified