A 45 Degree Elbow is used whenever you need to offset the stove pipe to avoid an obstacle like a beam, peak of the ceiling, etc.
Note: a straight installation is always best and elbow offsets should be used only when necessary.
Our single wall stove pipe is made of 22 gauge high quality steel and painted black with high temperature paint for a beautiful finish. Welded seams means each section of pipe comes assembled and ready to install. Pre-drilled holes and metal screws are provided to secure each section of stove pipe to the next.