Koolermax AR-125 6-stage RO+DI Aquarium Drinking water RO system 80 to 120 GPD New complete 2 outputs Koolermax 6-stage dual output RO+DO Aquarium Drinking water RO system, 120GPD The system come with RO unit, pressure tank, dispensing faucet, all filters, installation hardware auto-shut-off when the tank is full, high capacity filters. pressure gauge included, reads operating pressure and know when to replace the bottom 3 filters Assembled in USA with NSF and FDA approved components, tank holds 2 gallons, larger tank available