1. Easy Installation The package includes: 1 x 1812/2012 RO membrane housing, no additional tools required. Userfriendly design for effortless installation. For standard RO membranes, please search for the product separately. 2. Standard Size The membrane housing measures 3 x 13 inches, compatible with 2 x 12inch RO membranes rated at 125 GPD or below. Suitable for 50GPD / 75GPD / 100GPD / 125GPD RO membranes, it can CSM, Axeon, Dow FilmTec, and all other 1812 and 2012 RO membranes. 3. Durable Construction Made of GRP (fiberreinforced) and ABS, the housing features a robust build for pressure resistance, explosionproof and thermal insulation properties. It resists acids, ammonia, oils, coatings, and other corrosive substances. 4. LeakProof The RO membrane housing features a doubleseal design to prevent water bypass or leakage. The reinforced bowl enhances pressure capacity and structural strength.