Established in 1969, Sheet Metal Connectors is a fabricator of standard and custom commercial and industrial sheet metal products. The company, a yellow label union shop, can supply all customers needs for the heating, ventilation and air conditioning industry that includes, but is not limited to, E-Z Flange Spiral Pipe System, single and double wall spiral pipes and fittings, polyvinyl coated underground duct and fume exhaust systems, single and double wall rectangular ducts and fittings, flat oval ducts and fittings and a variety of HVAC accessories. Sheet Metal Connectors has locations in Minneapolis and Rockford, Ill.