I use a box fan with a filter on it as part of my dust collection. I could never figure out how to put it by my saw, out of my way at the correct height. Today it hit me. I have an old projector screen, the kind we use to use to look at family slides at home. You did these things before TV's. I got it out today, it was on it's way to Goodwell, and removed the screen. Made a hook to put on the handle on my box fan and walla, a height adjustable fan holder. Works great!!