The 0800 Series is on the market in two body types for use with steel duct: a double flange screw gap mounting variety (M1) or possibly a knock-more than tab style (M2). Both equally variations come with a straightforward installation Minimize-out template which makes the oval form openings additional straightforward https://dampers-for-industrial-se45678.boyblogguide.com/35969295/indicators-on-dampers-for-industrial-sector-you-should-know