LISTED IS AN INDUSTRIAL RO WITH 6- 4 INCH MEMBRANES. WAS USED TO CREATE PERMEATE FOR A COOLING MISTER. NOT SURE OF THE MEMBRANES INSIDE OF IT. WAS AND IS SUPER CLEAN, ALMOST NEW. PUMP IS 3 PHASE AND THE SALE WOULD INCLUDE A SMALL LENZE VFD FOR CONVERTING PHASE AND SOFT STARTING. MAKE AN OFFER AND START YOUR NEW PROJECT.