Product review (5 stars): Just what you need for a dryer that vents through the window
Just what I needed to keep the exhaust pipe of my dryer in the window so I don't have to keep putting it in and taking it out. That window is very hard to open and shut, so I really needed a solution like this. And it keeps the exhaust from blowing back through the window. The sides expand to fit the window exactly. If you have safety bars in your window, you will have to find a way to take them out or cut through them because they will probably be in the way of the little hood that keeps rain out of the exhaust pipe.