<p>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.</p>
<p>These elbows are made by bending and pleating a piece of duct. The non-welded style starts with an un-joined piece of duct and as the pleating takes place, the overlapping edges are pressed together on the inside of the elbow. The welded elbow starts with a piece of duct that has been continuously welded down the seam. The duct is formed the same way but the weld is on the outside radius.</p>
<p>Application: The welded elbow provides good all around usage. It is uni-directional. The rolled lip collar adds about 2.5” tangent to the length of the elbow. However, please remember that the collar is sized to receive a cut piece of pipe. This provides infinite adjustability.</p>
