The 0800 Collection is on the market in two body kinds to be used with steel duct: a double flange screw hole mounting form (M1) or possibly a knock-around tab type (M2). The two styles include an easy set up Slice-out template which makes the oval condition openings further simple https://heavy-duty-stainless-stee57890.blog-kids.com/37277879/heavy-duty-stainless-steel-damper-manufacturers-can-be-fun-for-anyone