1200 expandable cdl ro. owner is retiring due to health issues. this unit is only 2 seasons old on a 3500 tap operation. comes with an extra membrane and storage pipe. used membranes were tested and came back 118 %. this was running 1300 gallons an hour @ 21% without cranking it much. can be seen at Richards Maple Products in chardon , ohio. 330-206-1606