Four Bolt Fange Simulated Installation

Since 1978, Nexus has been committed to serving the sheet metal industry throughout North America. The Nexus brand of high quality four bolt duct flange connection systems include flange, nuts, bolts, corners and cleats. These components form a virtually leak-proof system for connecting rectangular duct in commercial and industrial applications.

[@Sahak911]

maybe you can use Ziber S-10 Seam locker machine instead of hummer for fast processing

[@theanagraman8325]

We don't have tdc flange formers in the field. So we make ductmate when we need cut pieces