Wholesale Ductwork in Caledonia & Milwaukee

Commercial construction between Milwaukee and Kenosha has kept sheet metal shops busy, and a duct order that shows up late or out of tolerance can stall a mechanical crew for days. Southport Mechanical fabricates rectangular duct, spiral pipe and custom fittings in our own 45,000-square-foot facility, supplying contractors and building owners across southeastern Wisconsin with components built to their drawings.

Call 262-898-3000 to request a ductwork quote or send drawings for a takeoff.

Why Contractors Buy Prefabricated Ductwork

Building duct in the field is slow, and it eats into labor budgets on every job. Buying fabricated components from a commercial shop moves that work indoors.

• Shorter field schedules come from installers hanging finished sections instead of cutting and assembling on site.
• Consistent quality results when seams, joints, and fittings are formed on shop equipment under controlled conditions.
• Fewer crews in tight spaces helps on jobs where plumbers, sprinkler fitters and electricians share the same ceiling.
• Less jobsite waste follows when material is cut to size before it leaves the shop.
• Predictable deliveries let project managers plan crew sizes and lift schedules around firm dates.

Ductwork Fabrication and Supply

Our sheet metal shop produces the components that make up a commercial air distribution system. Orders are built from mechanical drawings, shop drawings or a field-verified layout, and our team can coordinate sizing and routing questions with the design engineer before anything is cut. Because we also design and install commercial HVAC systems, our fabricators understand how each piece has to fit once it reaches the building.

What we fabricate:

• Rectangular ductwork for mains, branches and equipment connections.
• Spiral duct for exposed runs in retail, gyms, warehouses and open offices.
• Custom fittings and transitions including elbows, offsets, tees, reducers and plenums.
• Prefabricated duct sections assembled in the shop and labeled for installation.

Material type and gauge are matched to the application and the pressure class on the drawings. Galvanized steel covers most commercial work, with other materials available for projects that call for them.

Recent work shows the range our shop handles. For the 250,000-square-foot Woodman’s in Racine, we prefabricated both the spiral and rectangular ductwork. At Lake View Technology Academy in Kenosha, a new 48,000-square-foot school, our team prefabricated most of the ductwork along with the controls for the VAV boxes.

New Construction Orders

For new buildings, we work from the approved drawings and coordinate release schedules with the project timeline so duct arrives in the order crews need it.

Retrofit and Replacement Pieces

Renovations and equipment change-outs often need transitions and fittings that match existing ductwork. Our team builds those pieces from field measurements so new equipment ties into the existing system cleanly.

Modifications and Performance Support

When an existing system has airflow, leakage, or sizing problems, our team can evaluate the layout and fabricate the corrections. That can mean resized branches, new takeoffs, added balancing dampers or replacement sections where seams have separated and are leaking conditioned air into the ceiling.

Why Choose Southport for Wholesale Ductwork?

Our fabricators work alongside engineers and installers who build commercial HVAC systems every day, so questions about fit and function get answered by people who know the field. We have served commercial projects across Racine, Kenosha and Milwaukee counties since 2005.

Need ductwork fabricated for an upcoming project? Call 262-898-3000 to request a wholesale ductwork quote.