Dultmeier Sales's RO membranes offer the industry's leading patented membrane technology! Output performance is equivalent to FilmTec/Dow. Our buying power allows us to offer these high quality membranes at reduced pricing to you. Exact replacements for Film-Tec, Osmonics and many others in the market. Protective ABS shells are standard. Individually tested before shipping. Temperatures to 110° F. Pressures to 400 PSI. (For tap water applications.)