Description The Classic RO/DI system provides up to 100 GPD of economically filtered reverse osmosis water, removing harmful substances such as heavy metal ions and total dissolved solids from tap water. Features: Manual flush valve allows user to increase membrane life - Clear micron cartridge housing makes it easy to view when cartridge should be replaced - Auto shut-off valve stops incoming water supply when outflow is turned off - Wrenches make it easy to access the cartridge and membrane housings - Garden hose adapter make it easy to connect to a faucet - 1/4 inch Buddy-Fit Press Fit Connectors simplify plumbing - 0-160 PSI gauge provides a pressure reading of the supply water - 10 ft. x 1/4 inch of each Blue, Yellow and Red Polyethylene Tubing helps with plumbing setup - Built-in wall mount bracket allows the unit to be hung and secured in place. OPERATING REQUIREMENTS: Optimal water pressure: 40-65 PSI (if under 40 PSI a booster pump is required), Maximum water pressure: 80 PSI (if over 80 PSI a pressure regulator is required). Optimal water temperature: 77*F (25*C), Maximum water temperature: 105*F (40.5*C), Typical rejection rate: 1:3.5. 100 GPD Classic RODI System, Item 540326 Specifications Product Specifications: 100 GPD. Dimensions with bracket: 16.5" wide x 8.5" deep x 18" high. Weight 14 lbs. Minimum water pressure: 30 PSI. Suggested water pressure: 65 PSI • Maximum water pressure: 80 PSI - Optimal Water Temperature: 77°F (25°C). IMPORTANT INFO for New York City Residents Download the 100 GPD Instruction Manual HERE Download Plumbing Diagram HERE Video