I bought the fan thinking it was universal to all windows. It wasn’t. I left it in the window for about a month or two. If you have a normal 36” window it is a perfect fit. Works like new. Nothing broken.
I'm quite happy with the fan. It works well and is not terribly loud. The foam spacers are pretty decent, better fitting than the retractable kind but still don't seal completely on the bottom and top. We'll just have to see how long it holds up.