Thermaround™ Is Our Round Solution In Outdoor Environments

Offering the same great vinyl cladded protection as rectangular Thermaduct, Thermaround is an excellent solution for the outdoor elements. This high R-value system offers an R-12 insulated value and extremely low air leakage. Thermaround uses same UV stable 1000 micron vinyl cladding for a durable solution that will naturally shed water. In the interior, air passes over a smooth aluminum surface free from loose fibers to give your building better IAQ performance.

Rooftop Spiral Duct System


  • Patented Product
  • R12 Insulated Value
  • UL 181 Listed InspiralR Interior
  • 1000 Micron UV Stable Vinyl Cladding
  • High Static Pressure Design
  • Gored Elbows - No Need for Turning Vanes
  • Low Air Leakage
  • Simple Connection System for Easy Installation

Near Zero Air Leakage

Energy Efficient Air Distribution

Preinsulated System

Thermaround provides an R12 insulated value without the need for additional insulation

Ease of Installation

With Thermaround's lightweight duct and fast connection system allow you to install more duct per day

10 Year Limited Warranty

Thermaround is backed by a 10 year limited warranty

preinsulated round ductwork outdoors
thermaround insulated spiral ductwork
Thermaround Outdoor Round Ductwork
preinsulated outdoor ductwork
Hospital Exterior Rooftop Spiral Duct
Thermaround spiral ductwork system
Thermaduct Thermaround Outdoor Duct Solved