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Old 03-16-2018, 07:40 PM   #78
Steveo57
Senior Member
 
Join Date: Dec 2017
Location: Lisbon
Posts: 551
Take a piece of the flooring and stick it down in the duct work to see what it does. Or put it in the oven at 200 degrees.

Also I would get some of that foil backed duct tape and seal up all around the edges of the duct so the cool air from the underbelly can't get in.



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