6-in x 25-Ft Insulated Flexible Round Flex Duct Tube R6 Heating/AC Black Venting

Thermaflex flexible ducting is UL 181 Listed Class 1 air duct. Strong polyester film laminated and encapsulating a heavy steel wire helix forms the inner core. The outer silver film provides a reflective surface on the inner core. An oversized, loose, steel wire helix supports a thick blanket of fiberglass insulation creating an air gap between the reflective inner core and fiberglass insulation. The outer vapor barrier is a jacket of durable black polyethylene. The smooth airtight inner core of polyester is designed for low to medium pressure systems. Can be used in place of galvanized pipe in most applications for heating, cooling, intake and exhaust needs.

Product Features

• Black polyester jacket R6 fiberglass insulated flexible duct
• Reduced total installation cost with fast, economical installation
• Certified UL 181 & NFPA 90A and 90B for US & Canada
• Crush Resistance: 3x Stronger than standard flexible duct
• 20% faster recovery time out of package than standard flexible ducting
• Superior insulation and thermal performance.
• Easily shaped to fit over all inlets and quickly connects to fast fittings.
• GREENGUARD Indoor Air Quality Certified
• GREENGUARD Children and Schools Certified
• USA made