Spiral & Oval Ductwork in Manufacturing facility

Spiral & Oval Ductwork Specialists

You don’t just want the best, you want a competitive edge. Spiral sheet metal ductwork offers lower installed cost, lower maintenance, and provides energy efficiency. Learn more about our Spiral and Oval Ductwork or about Hranec S.M.I.'s manufacturing capabilities.

PVC – Polyvinyl Coated Ductwork

Polyvinyl Coated Ductwork (PVC duct) brings the strength and durability of steel together with the corrosion resistance of polyvinyl chloride. Perfect for underground and fume exhaust applications. Learn more on our PVC Ductwork page.

Square & Rectangular Ductwork

Modern, automated fabrication of square and rectangular duct means low-lead time and great pricing, while rectangular duct offers the highest air carrying capacity for any given width and height of application. Visit our Square and Rectangular Ductwork page.

Hranec Sheet Metal Incorporated

Union Spiral Ductwork Manufacturer

Painted Spiral Ductwork in CeilingYou need your order yesterday.  At Hranec S.M.I., we understand that better than most.  It’s why we’ve invested in a 21st Century Duct Design system and state-of-the-art Manufacturing & Facilities: to meet your HVAC ductwork needs ahead of the competition.
But it’s about more than great lead time, pricing, and an exceptional product.  It’s about HVAC ductwork solutions that can save you on installation and maintenance, improve the look of your facilities, and help increase your bottom line.
Contact Hranec S.M.I. today for a fresh approach.  Our staff brings exceptional production values and great customer service together to make your life easier and your project more profitable.

Spiral, Oval, or Rectangular Ductwork?

Hranec S.M.I. offers full service for your HVAC ductwork needs, from traditional square and rectangular duct to polyvinyl coated ductwork, along with a wide range of specialty items, accessories, and even custom metal work.  But it’s our Spiral Duct that makes us famous.

  • Installed cost up to 50% less than traditional rectangular duct work.
  • Exposed spiral duct work enhances your building’s architectural features.
  • Vastly reduces air leakage and noise breakout.
  • Reduces energy costs and simplifies air flow measurement.
  • Preferred by many architects, developers, and commercial building owners.
  • Antimicrobial coating available for enhanced air quality.  Perfect for application in hospitals, schools, commercial offices, day-care centers, and sports facilities.

Best of all, your spiral duct work order needs no lead time on materials.  Hranec S.M.I. fabricates spiral duct work in house, so that we can turn around your spiral duct order immediately.

Contact Hranec S.M.I. today, Download our Catalog, or visit our Spiral & Oval Ductwork page to learn more.

Spiral Ductwork in warehouseUnion HVAC Products

To learn more about the Hranec S.M.I. product line, please Download our Catalog.  Or Contact Hranec S.M.I. today.

  • Rectangular Slip & Drive
  • Rectangular TDC/Ductmate
  • Rectangular Double-Wall
  • Rectangular Welded
  • Spiral Single-Wall
  • Spiral Double-Wall
  • Oval Single-Wall
  • Oval Double-Wall
  • Round Pipe Welded
  • Specialty Items & Accessories
  • Custom Metal Designs
  • All metals including: Galvanized G 60 and G 90, Stainless Steel, Aluminum, Paintgrip, and PVC
  • Gauges 16 though 26

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