Premium Sheet Metal Products

SMC is a leading provider of custom high-efficiency commercial HVAC sheet metal systems and connectors, specializing in sheet metal ducts and pipes, and polyvinyl duct (PVS) exhaust systems.

Innovative Systems

We’re constantly working to improve our products and processes, leading the industry in innovation with our time-saving, energy-efficient, and advanced ductwork systems.

Competitive Prices

Founded in 1969, we’re proud of being a union shop and stand behind our made-in-the-USA products. We offer the latest innovations in HVAC sheet metal systems all at competitive prices.

See Us at the 2023 AHR Expo

Meet Sheet Metal Connectors in Booth #B334 at the 2023 AHR Expo Feb. 6-8! We are a leading manufacturer of HVAC sheet metal connectors and ductwork systems with 50+ years of manufacturing and fabrication of ductwork and components experience. Learn about PriceDuct, exclusive to SMC customers, to estimate and build your ductwork.

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Versatile HVAC Sheet Metal Products

Whether you’re looking for spiral pipe and fittings, rectangular, flat oval, polyvinyl products, or dampers and louvers, SMC has the high-quality HVAC sheet metal products and accessories you need. With materials such as galvanized, G-90 galvanized, paint grip, aluminum, stainless steel 304 and 316, and PVS , our products are some of the most versatile and durable on the market.

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About Us

For over 50 years Sheet Metal Connectors, Inc. has fabricated premium quality standard and custom commercial and industrial HVAC sheet metal products. Our innovative ductwork, spiral pipe, fittings, doublewall duct, dieform elbows, and more are made in our USA factories in Minneapolis, MN, and Rockford, IL. SMC is proud to manufacture quality HVAC sheet metal connectors and ductwork systems at a competitive price and with top-tier customer service.

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We Want To Hear From You

We have technical and customer support available between 7:00 am and 4:30 pm central by phone, email, or text. If you have questions about SMC and our products, we’d love to hear from you.