Under-sink type Five stages filter cartridges 1st: 11" ,PP sediment, 5 µ 2nd: 10", Coconut GAC,NSF 3re-5th: 100 GPD membrane*3 , NSF 6th: 10",Coconut GAC, NSF With booster pump/transformer(110V or 220V 24VDC) With shut-off valve Capacity: 50gallons per day Waste water ratio: 1:3 Flow rate : 1.5liter/min Applicable Pressure: 50PSI