Cootentler Air Draft Device Connection(Exhaust Fan is Exclude, Beige)How it works: This item is used to connect the mesh windows on booths door and 10 or 12 exhaust fan, the cover can be directly installed to the booth by attaching vel cro. When you install this connector and exhaust fan (utility blower) , it will help filter out overspray and odor to the outside faster to better finish painting works. We recommend that you can also purchase 2pcs door filters to install on booths door, the overspray can be filtered by