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Discussion Starter · #1 ·
My HVAC sub says that it's OK to have a return duct in contact with the ground in a crawlspace as long as it's rigid duct so critters can't get into it. It seems like a problem waiting to happen to me. What's the general guideline for this sort of thing?
Thanks very much!


Wood Automotive tire Gas Tints and shades Pipeline transport
 
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