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SWMN | I have one at the ceiling with a door on it and a 8 in pipe coming down to welding table. If wielding I take the cap off above my welding spot or if you want to take air out of the whole shop I pull a rope to open the door by the fan I have a diffrent rope to pull the door shut. It workers alright but if you are welding in the shop away from the duct it takes forever to clear the shop. It works better to open the big door for 1 minute . Our fan is a old 12 inch fan from a hog barn. | |
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Shop Exhaust fan?
