I clean for like a week, hang plastic on walls ceiling. I have a exhaust fan from a factory ceiling exhaust that has been built in to a wooden box. It goes in the the garage door(big door) that is closed off with plastic. I cut a hole in the plastic to fit the fan into. It works great!! You can see the fan in this picture. The door way is covered in plastic and I cut a hole for the fan then, just staple the plastic to the fan.
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