1. Standard Size: The membrane housing measures 7.6 x 33 cm, suitable for RO membranes of 5.1 x 30.5 cm (125 GPD and below). It can be used to CSM, Axeon, Dow FilmTec, and all other 1812 and 2012 RO membranes for 50GPD or 75GPD or 100GPD or 125GPD. 2. Construction: Made from fiberreinforced ABS with a thicker design, the membrane housing offers pressure resistance, explosionproof and thermal insulation properties. It resists acids, ammonia, oils, coatings, and other corrosive substances. 3. No Leakage The RO membrane housing features a doubleseal design, eliminating water bypass or leakage issues. The thicker shell enhances pressure capacity and strength. 4. Easy Installation The package includes: 1 x 1812 or 2012 RO membrane housing. No additional tools are required. Userfriendly design for effortless installation. For standard RO membranes, please search for the product. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store