RECTANGULAR DUCT
Rectangular ductwork is the industry standard for commercial HVAC applications, offering exceptional versatility for projects ranging from open mechanical spaces to congested ceiling plenums and wall cavities. Its adaptable design accommodates a wide variety of building configurations while providing efficient air distribution and seamless integration with other building systems. Fabricated in accordance with SMACNA standards using a Pittsburgh seam (welded seams also available), our rectangular ductwork delivers the precision, consistency, and quality contractors expect on every project.
SPIRAL DUCT
Round (Spiral) ductwork offers an efficient, high-performance solution for commercial HVAC distribution systems and is commonly specified for main supply trunks serving VAV terminals and similar equipment. Its aerodynamic design minimizes pressure loss while delivering a clean, architectural appearance for exposed installations. Manufactured with a standard helical (spiral lock) seam, our round ductwork provides superior strength and is designed to meet a 10-inch water-gauge pressure class. When project constraints require a lower profile, we also fabricate oval ductwork to preserve airflow performance while maximizing available space.
Rolled single-seam ductwork shown.
HVAC ACCESSORIES
Commercial Duct Systems offers the following accessories to support your project:
- TDC corners with nut/bolt hardware
- Butyl gasket
- Slips/Drives/Barlock
- Ductmate frames
- Spiral RF connections (round flanges) and male/female couplers
- Flex canvas (Raw)
- Blue plastic wrap for sealing duct during transport/storage, often required under regulation to uphold cleanliness standards
- 3M adhesive formulated for fiberglass liner
SPECIALTY FABRICATION
While Commercial Duct Systems manufactures a complete range of SMACNA-standard rectangular, round, and oval ductwork, our capabilities extend well beyond conventional HVAC systems. Our experienced fabrication team produces fully custom welded ductwork, fittings, and specialty assemblies designed to meet the unique requirements of industrial, laboratory, architectural, and process exhaust applications. From one-of-a-kind transitions to complex fabricated components, we combine precision craftsmanship with advanced manufacturing to deliver solutions tailored to your project’s exact specifications. If your project demands something beyond the standard, we’re ready to build it.
We Are a Fabricator, Not a Mechanical Contractor, Not Your Competition.
Commercial Duct Systems is a dedicated HVAC ductwork fabrication company. We manufacture ductwork and related sheet metal products for mechanical contractors. We do not perform installation services, field labor, or mechanical contracting work of any kind.
Our role is to support mechanical contractors by providing high-quality fabricated products, reliable production capacity, and responsive project coordination.
We are a manufacturing partner—not a competitor.
Our mission is to simplify HVAC project management through comprehensive manufacturing and logistics solutions. We’re more than just a supplier—we’re a dedicated partner, committed to the success of your projects.
Experience the Commercial Duct Systems advantage—where innovation, quality, and customer focus drive faster, smarter, and more reliable HVAC solutions.
CONTACT INFORMATION
REQUEST A QUOTE
For pricing, plans, and bid submissions, use our dedicated quote request form by clicking the button below.
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