Inquiry (采购产品): Backdraft dampers I am looking for a metal rectangular to backdraft damper. It will be installed inside a 13” x 18” furnace output duct. It will be mounted horizontally. Do you have such a product? If so please provide information and pricing. **** Hidden Message ***** Rick Rohler 17112 Company: Valley View Masonry E-mail: rrohler@comcast.net **** Hidden Message ***** rrohler@comcast.net
