* Under-sink compact reverse osmosis system * Five stages filter cartridges * Booster pump with transformer 110V or 220V 24VDV * 4-Way shutoff valve * With NSF certificate: in-line post coconut carbon cartridge, 50GPD membrane, faucet, and pressure tank * Built-in 2.2 gallons water tank * Capacity: 50GPD * Wastewater ratio: 1:3 * Pure water flow rate: 2.5 LPM * Operating pressure: lower and equal to 50PSI