ASM
Custom Ductwork & Sheetmetal Fabrication Fabricated In-House. Installed with Precision.
We fabricate and install ductwork and sheetmetal components for a wide range of commercial and critical environment projects — including offices, schools, labs, cleanrooms, and healthcare facilities. Our in-house shop gives us control over quality, lead times, and coordination with your field team.
From standard HVAC duct to custom welded assemblies, we build systems that install cleanly and perform reliably.
⬇️ Take a closer look at the sheetmetal and ductwork services we offer.
What We Do
Our shop produces ductwork and custom sheetmetal components to meet the needs of commercial and critical environment projects across Connecticut.
✔️ Galvanized, stainless, aluminum, and carbon steel (black iron) fabrication
✔️ Rectangular and welded duct systems
✔️ Breeching, stacks, transitions, hoods, and enclosures
✔️ Field measurement and shop drawings using advanced tools — allowing precision and coordination beyond what most contractors provide
✔️ Pre-install coordination with other trades to reduce clashes
✔️ Delivery and expert installation by our in-house team
From simple duct runs to high-spec projects, we’ve got you covered.
Applications We Support
We fabricate duct systems for a wide range of environments and use cases — from everyday commercial HVAC systems to complex, code-driven critical environments.
✔️ Commercial HVAC (offices, retail, mixed-use)
✔️ Labs and cleanrooms
✔️ Healthcare and hospital systems
✔️ Industrial process and exhaust systems
✔️ Schools, universities, and municipal buildings
✔️ Equipment ventilation, outside air, and supply air systems
Our Advantage: In-House Fabrication
With our own fabrication shop and experienced team, we control quality, lead time, and fit — all without relying on outside vendors. That means:
✔️ Faster turnaround for custom or replacement ductwork
✔️ Fewer coordination delays and misfits in the field
✔️ Better integration with mechanical, electrical, and structural elements
✔️ Less risk of change orders or rework
Whether it’s a rush project for a local contractor or a complex cleanroom requiring high-spec welded duct, our in-house shop ensures your job stays on track.
See Our Fabrication & Installation Work
Sheetmetal Glossary
Not sure what G90 means or what a Pittsburgh seam is? We’ve put together a glossary to help you understand the terms that drive sheetmetal fabrication and ductwork design.
Featured Projects with Custom Ductwork
Explore how we’ve delivered precision ductwork for projects of all types:
🔨Cleanroom Retrofit with Welded Stainless Duct – New Haven
🔨 Stair Tower Exhaust Installation – UConn Campus Facility
🔨 Underslab Duct Coordination – Hartford Office Buildout
🔨 Hospital Fan Wall Integration – Bridgeport Area Healthcare Facility
🔨 Roof Curb and Duct Installation – Manufacturing Facility, Waterbury
Let’s Talk About Your Sheetmetal Project
Whether you’re a GC needing fast duct fabrication or a facilities team upgrading your mechanical system, we’re here to help.
📞 Ready to get started? [Contact Us ➝]
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