KB Duct manufactures standard duct components for a variety of applications. They have every duct component known in the industry – elbows, branches, in-cuts, cut-offs, reducers, and more. All products can be manufactured with flanged, raw ends, or clamp-together ends.
We also have standard galvanized rings in stock in sizes 4" thru 40".
KB Duct uses the EZP process (electroplating) for galvanization. Electroplated makes for a better looking product and it works better when welding than hot dip galvanized rings.
Other sizes available in a short lead time.