Outdoor Pre-Insulated Ductwork Thermaduct

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Thermaduct offers a family of pre-insulated products for both indoor and outdoor applications. We have a nationwide network of Thermaduct experts ready to help you benefit your application with a pre-insulated system.

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Easy to Install Outdoor Duct Systems Available Nationwide

Thermaduct offers high quality, durable all-in-one duct systems with high R-values and low air leakage rates. With our rectangular or round systems outdoor systems, installers will save on labor costs with our lightweight duct systems. Thermaduct and Thermaround are specifically designed for the elements and have a strong, weather resistant cladding to ensure a long lasting installation.

Rooftop Phenolic Ductwork

Thermaduct - Outdoor Rectangular

Duct, Insulation and Cladding all in one. A strong, weather resistant alternative to wrapped outdoor ductwork, double wall or other outdoor products.

  • R8 Through R24 Insulated Values
  • 1000 Micron, UV Stable Vinyl Cladding
  • Closed Cell Insulation
  • Near Zero Air Leakage
  • Lightweight
  • 10 Year Limited Warranty
Thermaduct R-12 round ductwork

Thermaround - Outdoor Round

Duct, Insulation and Cladding all in one. A weather resistant duct solution in a shape that's great for the outdoors! A great alternative to wrapped or double wall spiral ductwork.

  • R12 Insulated Value
  • Naturally Sheds Water
  • 1000 Micron, UV Stable Vinyl Cladding or Architectural Metal
  • Closed Cell Insulation
  • Lightweight
  • Near Zero Air Leakage
  • 10 Year Limited Warranty

Lightweight Interior Systems - Don't let your duct weight you down!

Indoors, our round and flat oval phenolic systems bring the same high efficiency experienced outdoors to interior ductwork with up to a 75% weight savings. Our patented indoor round and flat oval solutions that are UL 181 listed for 10” w.c. positive and 8” w.c. negative applications.

Lightweight InspiralR and Floval Ductwork

InspiralR & Floval - Indoor Round and Flat Oval

Duct and Insulation in one lightweight, pre-insulated product. InspiralR and Floval are lightweight systems and can offer up to a 75% weight savings versus traditional double wall spiral duct.

  • UL 181 Listed Round Duct System
  • Near Zero Air Leakage
  • Made with R6 Phenolic Panels
  • Lightweight Duct System - Up to 75% Lighter than Doublewall
  • 10 Year Limited Warranty

Related Articles

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As energy codes push the required insulation values higher and higher, the need for better outdoor duct solutions is growing. Thermaduct products are designed to meet the needs of outdoor applications with a high level of energy and installation efficiency.

Find out more about our outdoor solutions.

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Low air leakage, IAQ duct solutions increase the energy efficiency and health of your building. Thermaduct is here to help. Our indoor products are lightweight solutions that reduce installation weight by over 70%.

Find out more about our indoor solutions.