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Old 05-02-14, 09:37 PM   #16
nokiasixteth
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I was going to put a small piece of some sorta plastic in there with a hinge on top and at bottom a stiff piece of plastic or something and under it a 2x4. So the air could only flow out the vent and not backflow. Kinda like a 1 way valve for air duct but poor mans way.
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