We offer the starting ductwork for furnaces and air handlers, called Supply Air Plenums and Return Air Plenums. In addition, we offer take-offs, elbows, round duct pipe, and register boots that can be connected to the starting ductwork and run to each room. If your installation location is difficult to reach with traditional ducting materials, we also offer flexible ducting which allows the duct to conform to your space making installation quick and easy. Want to learn more about ducting for your heating and cooling equipment? Check out this great document to learn all about selecting and designing your own ducting system. Studies have shown that heating and cooling systems can lose up to 30% of their efficiency due to leaks in the duct work. See more details about sealing duct work in this article about duct leakage.