RUF Duct

Double wall, foam-filled duct for outdoor use that’s fully watertight, weighs less than insulated duct, and combines ducting and insulation in one step



Learn about the RUF duct specs
Dive into the RUF duct’s typical physical properties, guages for both Rectangular and Spiral RUF duct builds, a step-by-step walkthrough of the field connection, and testing information.
Construction Highlights
- A double wall duct intended for outdoor use.
- Watertight, weighs less than insulated duct, combines ducting and insulation in one step.
- The only product made that is shop foamed in place leaving no air gaps.
- Outerwall is more rigid due to adhered foam and less subject to material handling issues.
- Foam is stable from -40° Fahrenheit to 200° Fahrenheit.
- Made in several shapes such as round, rectangular, and flat oval.
- Wall thicknesses abailable in 1″, 2″, and 3″ options.
- Material options include Galvanized, Stainless Steel, Aluminum, and Powder Coated.
- All pieces are numbered for ease of installation.
- Assembly is very easy with very few parts to deal with.
RUF Duct construction meets and has been tested to comply with UL Fire & Smoke Standards (UL-723 & ASTM E-84). Rectangular duct tested to 7″ negative static — no deflection.
Testimonials
RUF duct install has been an efficient process from site delivery to install. When roof supports are laid out and installed accurately, the RUF duct system can easily be pre-assembled in part on the ground and set in place via crane or Lull.
We think it’s a great product. It’s quality made, very easy to install, and extremely durable. We try to sell it to design teams whenever the opportunity presents itself. We’ve ordered both aluminum and galvanized construction and have had great success with each.