iSpring RCB3P 300 GPD Commercial Grade Reverse Osmosis Water Filter System w/ Booster Pump and Oversized Pre RO Filters Great for light commercial use in restaurants, labs, salons, etc. Feed Water Pressure: 22 - 95 psi The oversized 20" pre RO filters provide up to 30,000 gallons of filtered water, twice as much as the industry standard 10" filters Three high efficiency 100 GPD RO membranes combine to provide up to 300 gallons of reverse osmosis water per day Features a free-standing frame, booster pump, and a built-in pressure gauge Built in booster pump increases the production of purified water by raising the water pressure to the optimal level for the reverse osmosis process Compatible with most pressurized storage tanks; tank not included 3/8" fittings for faster water flow Lifetime support from iSpring in Atlanta, Georgia; 678-261-7611