5 stage RO SYSTEM with pump,adapter and faucet. manual flush. 3.2G steel tank NSF certificated membrane. 5stage Reverse osmosis system ... RO-50G-A01 , it is our best popular product and five stage filtration . ... ,capacity is 50GPD,3pcs white 10" housing ,5 stage :PP,granular carbon,block carbon ,50G Hidrotek ... 40'HQ load 760units. 5stage Reverse osmosis system