I need a exhaust fan for removing bondo and other chemical oders. My shop is 24x20x9. I checked the archives and found a website that had in the wall models and roof models. Is there a drawback to either.Any sugestions or help would be great. thanks
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Try useing a big fan with a filter in front of it to catch debree, and put it in a window forcing the air out ward. We had two of them in a painting shop of my fathers that worked great. but plan on cleaning the filters alot, and washing the fan. One of the big square flat fans works the best.