Hi-Velocity 20020120015 Fiberglass Flex Duct, 2 in x 15 ft L, R4.2, Fiberglass, Galvanized Steel, Polyester

Item Features

• Hi-Velocity Flexible Duct Can be Installed Quickly and Easily, Delivering the Air Quietly with a Sound Absorbing Inner core. The Inner core is Made of a Double Lamination of Foil Laminate and Clear Polyester Film Which is Interlaced with a Galvanized Steel Wire 0.041 Inch having a 3/4 Inch Pitch
• The core is Wrapped with Fiberglass Insulation Certified Greenguard having a Coefficient of R4.2/R8.4 and is Encapsulated by a metalized Vapor Barrier Reinforced with Fiberglass String
• Maximum Flame Spread 25, maximum Smoke Developed 50 Burning Character
• 5000 FPM Air Velocity
• Carton of 4