Carey wrote:
JohnP wrote:
Interesting thread- I wondered about possible replacement material also.* I was thinking maybe fiberglass duct board, the type they use to make duct work in attics and stuff.* It comes in sheets and is usually 1" thick and has a foil face on it.* I used to work for an hvac company and I know it has some ULrating for fire. I also know it is not so good for ducts because the air moving inside it picks up particles and they get in the air stream.** Installed as an insulation with the foil facing the engine compartment this would not be an issue. It is fairly cheap, not sure how well it soundproofs, but bet it is as good as acoustical tile.