Membrane Tube Ro membrane ! Manufacturer ! Excellent quality ,Competitive Price ! Membrane Tube Ro membrane8" Membrane Housing for Reverse Osmosis System1) Diameter: 8" 2) length: 1 , 2 ... ,3 ,4 ,5,6,7 membrane element ... Hydranautics ,Trisep ,CSM ,Koch ,GE ,vontron and other standard membrane .