4040 Pumped RO System Water Fed Pole Window Cleaning With Do Vessels. I would recommend changing the 4040 membrane as would be due. Been in storage for a year. The item "4040 Pumped RO System Water Fed Pole Window Cleaning/ Car Valet With Di Vessels" is in sale since Sunday, April 11, 2021. This item is in the category "Home, Furniture & DIY\Household & Laundry Supplies\Cleaning Tools\Squeegees & Window Cleaning".The seller is "cla_sea" and is located in Leicester. This item can't be shipped, the buyer must pick up the item.