... flush. 3.2G steel tank NSF certificated membrane. 5stage Reverse osmosis system RO-50G-A01 , it is our best ... stage filtration .equiped with with manu flush ,capacity is 50GPD,3pcs white 10" housing ,5 stage :PP,granular carbon ... membrane,T33 inline post carbon.goose facucet,GF-01C 50GPD pump and adapter.3.2g steel tank ,packing size ... can load 320pcs. 40'HQ load 760units. 5stage Reverse osmosis system