- Code Compliance: UL 181, SBCC, BOCA, NFPA 90A and 90B and HUD 3280.715(b)
- Double lamination of tough polyester
- Smooth inner core and fiberglass insulation are reinforced with scrim, and sheathed in a black, heavy duty polyethylene jacket
- Designed to be used as: a supply and return duct with self contained A/C, air duct system and or branch duct with upflow or downflow HVAC
- R-Rating: 4.2; Thickness: 1-14 inch