I am spec'd out a Unico Hi-velocity system. Most of the installers have gone back to metal ducts because Unico is putting waaaay too much of a markup on their rectangular fiberglass ducts. Round ducts are gone since the John Manville plant burned down.

Is there a source for pre-fabricated 6.5" x 6.5", 1" thick fiberglass board ducts? I am not setup at the moment to make my own ducts from raw fiberboard.


thanks in advance....