Mestek Machinery is the industry-leading designer and manufacturer of the most complete, productive and innovative metal forming solutions for the fabrication of HVAC sheet metal ductwork and fittings. Our family of companies – Lockformer, Engel Industries, Iowa Precision, Lion, Roto-Die and ISM by Lockformer –  have people with decades of experience addressing every facet of the HVAC duct industry. The result is a combined knowledge and experience that develops cutting edge, precision technologies and automated manufacturing equipment that saves sheet metal contractors and fabricators time and labor to ensure a finished duct product that reflects a reputation for quality.