I work for a cabinet company as the service person over a large area of GA and I visit alot of sites. Well last several times I go by one large builder who I have 10 different subdivisions that I work in, has had a lot a/c ducting setting in the trash piles. I picked up a bunch of the larger sizes today as they have a pretty thick insulatuon in them figurinhg on using it under the roof skin as its very flexible and I can even stack it and compress it in the space and not mess with the cutting to maje channels for the wiring. Here is the pile I picked up today and as I will be going by 2 more sibdivisions tommorow I can pick up more.
Since its free I figure what the hay

. So what do ya'll think, good idea or bad?
Cliff