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exhaust fan back flow
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07-08-2014, 04:52 PM
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DAR
Montana Fan
Join Date: Jul 2012
Location: Sandpoint
Posts: 113
M.O.C. #12658
I think you could turn on the exhaust fan go outside the Monty and look to see if the flap is up or partially up to determine if they have removed the sheet metal that blocks the flow to the outside vent.
DAR
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