Your Go-To Custom Ductwork Fabricator

SINCE 2004

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Ductwork Products

Whether spiral or rectangular ductwork, we have the ability to fulfill all your sheet metal needs.

Whether spiral or rectangular ductwork , we have the ability to fulfill all your sheet metal needs.

Custom Ductwork

Our line of specialty sheet metal products is custom-designed for your specific application.

Wholesale Ductwork

We stock a variety of wholesale ductwork that can often be shipped the same day.

We stock a variety of Wholesale Products that can often be shipped the same day.


Greater Wisconsin Sheet Metal (GWSM) is a leading fabrication and custom design shop serving the Midwest since 2004. From our very first coil line to our latest 5 AXIS Waterjet Cutting Table, we constantly strive to provide the most state-of-the-art sheet metal duct production possibilities to our customers. We handle any and all projects in-house with such advanced capabilities. From a simple part to complex HVAC ductwork assembly, from order-taking to delivery, our first priority is to meet your needs.


Our single-source production welding service saves you time and money by facilitating every stage of your project from design and engineering, to finishing, packaging, and shipping. Whether you need a specific one-off piece of ductwork or long production runs, GWSM has both the experience and the resources to complete your sheet metal projects on time, using quality processes and materials.

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