The 0800 Collection is out there in two body variations for use with steel duct: a double flange screw gap mounting style (M1) or simply a knock-over tab type (M2). Both types have a simple set up Slice-out template which makes the oval shape openings excess simple to Reduce. Any https://heavydutystainlesssteelda78990.activablog.com/36160047/how-dampers-for-industrial-sector-can-save-you-time-stress-and-money