Our laundry area, in a nook "closet" with the hot water heater, needs to have doors installed to cover it all. Because the depth of the closet isn't quite deep enough to accomodate the depth of the washer/dryer we are forced to install something on the outside wall. Is there a bi-fold that installs on the wall not the ceiling? is there another solution, other than "Hang Curtains"? Thanks in advance.