This is a 300 GPH MP&C RO built by Membrane Process & Controls in Edger WI. It has 2 - 4" membranes and will include 2 brand new membranes! This unit was used 5 seasons and we are now selling because we bought a larger unit. This is made on a "wheel barrow" style cart so it is easy to move and install. I am listing this unit for a friend of mine who does not have internet so if you want to talk direct with him call him at 715-828-3001. Jerry