About Norco Manufacturing Norco Manufacturing was founded in Racine, Wisconsin, in 1962 and has been designing and manufacturing door systems ever since. Primarily, we work within the aviation industry, producing hangar doors for corporate, commercial, and military hangars. We can provide door systems for any large-scale application, which includes manufacturing facilities and marinas. Norco also specializes in retrofitting new door systems onto existing buildings. Our door systems can be found all over the world, and we maintain this presence through our high-quality work.