Our 150 GPD membrane fits all standard residential style membrane housings. Your purchase includes one 150 GPD Thin Film Composite membrane with a 1 year Warranty AND a 150 gpd flow restrictor.The Ultra Tech spiral wound reverse osmosis High Flow membrane elements for home drinking water are the industry’s most reliable. Advanced membrane technology and automated fabrication allow these elements to deliver consistent performance that equipment suppliers, water treatment dealers, and residential customers can rely on.Ultra Tech elements are shipped dry for convenient handling and long shelf-life. These elements are NSF/ANSI Standard 58 listed. Equipment suppliers can take advantage ofUltra Tech's Standard 58 listing and participation in the NSF Data Transfer Protocol to reduce costs for reduction claims for their systems. High Flowwater elements are rated at80 psi and will purify about 20% more water than competitive elements rated at 60 psi .INCLUDED:1 HIGH FLOW DRY 150 GPD MEMBRANE1- 150 GPD FLOW Restrictor