Hi all,
Does anybody here have any first hand experience with periscope type duct that is square in shape,and measures 2" x 6" for limited space installations, and is said to work as well as the standard 4" round duct?
Thanks to all!
Does anybody here have any first hand experience with periscope type duct that is square in shape,and measures 2" x 6" for limited space installations, and is said to work as well as the standard 4" round duct?
Thanks to all!