5 Inch Aluminum Hose Flexible Insulated R-4.2 Air Duct Pipe for Rigid HVAC Flex Ductowrk Insulation - 25 Feet Long
- High Quality: Aluminum Housing On the Outside and on the Inside For The Best Insulation Value.
- Air-tight Inner Core Decreases The Pressure Loss and Provides A More Hygienic Environment- High Energy Efficient / No fiberglass erosion into air....
- Thick Blanket of Fiberglass Insulation: Which Gives You A R-Value of 4.2.
- Tough Reinforced Metallized Polyester Jacket - Tear and puncture resistan - Air-tight Inner Core - No fiberglass erosion into air stream..
- Designed To Withold Bends And Sharo Turns WIthout Kinking.