City Air Mechanical is a quality manufacturer of C.A.M. INC. Rectangular & Spiral Duct and Fittings.  As the sole manufacturer of in Western ND, we have the unique ability to provide these innovative duct designs to our area at a lower cost in lieu of paying excessive freight and fuel costs.

C.A.M. Inc. duct and fittings are fabricated to provide a high quality line of customizable ductwork systems to suit any building design and/or specification.