I am having my Central Air installed in my house. I was at work today
and I mentioned to this guy who is a tin knocker sheet metal guy that my
Installer is using 2" duct board for the feed in the attic and run 7"
flex off at the trunk, the guy at work say that ductboard is not a wise
choice for a trunk, he says over the years there always be fine
fiberglass particles always coming from the ceiling vents and is illegal
in some states. any truth to this
If I understand your answer, are you saying a metal trunk is a
better choice, I did call the installer, he did say I still have my
choice if I want a metal trunk, I can go this route rather than the
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