Detailing is the most critical factor in the ductwork production process. Cates Sheet Metal has state-of-the-art detailing facilities and the most talented team in the business – with 126 combined years of experience between eight detailers. We can design duct systems faster and more accurately than any contractor in the Midwest.  In addition, our cutting-edge computer equipment sets us apart from the competition, as we continually update our system to remain at the forefront of technology.