Active Air Premium Ducting, 10" x 25'Description Premium Ducting: The Active Air ducting is comprised of a robust 3 ply aluminum foil laminate. It's designed specifically for air cooling and can also be utilized in a variety of heating and ventilation scenarios. This product is built to resist both punctures and tears. A single, uninterrupted, and corrosion resistant helix wire has been incorporated into the duct wall for added structural support. Perfectly suited for air cooled