Rectangular ductwork has been the main type of ductwork used in most residential and commercial buildings. It is still used today on a greater percentage of commercial projects over any other type. State-of-the-art equipment like coil lines and plasma cutting tables mean efficient fabrication, lower costs to the contractor and shorter lead times. Rectangulal ductwork is available in galvanized, galvanneal (Paintable), PCD (PVS), stainless steel, aluminum, and/or double wall in gauges 26 through 10 gauge. See more pictures in our photo gallery