The RO50 is a full sized 50 gallon per day Reverse Osmosis unit. This Full size unit provide better pre-filtration and less chance of Reverse Osmosis membrane fouling. This system has a Manual Reverse Osmosis membrane flush kit fitted as standard. This will extend the life of the Reverse Osmosis membrane if used regularly (some suppliers say it will extend the life up to 15 years). The Reverse Osmosis membrane will remove an average 97-99% of tap water contaminants. As this is the heart of the system we only use High Quality “Short-leaf" Thin Film Composite Membranes, these are US made membranes not inferior quality Asian copies. The RO50 includes:- 1 X 50 gallon per day High Quality Reverse Osmosis membrane, 1 X 5 micron sediment pre filter, 2 X Solid carbon block filter, 1 X Self Piercing Feed Valve 1 X Fitted Flush Bypass Valve Kit, 2 metres of Green, blue and Red 1/4" tubing, Dimensions: 39cm high x 43cm wide x 15cm deep This system uses ¼” pipe and fittings.