Watts 4" x 21" 1050 GPD TFC Membrane Element

The Watts W-4021-TW Commercial Membrane for reverse osmosis systems are specifically designed to purify 1050 Gallons per day (GPD) for tap water applications. Watts tap water commercial membrane GPD production rate is specifically based on operating 225 psi pressure and 77°F temperature. Pressure and Temperature differentials can affect RO Membranes GPD production rates.