Description
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 (.041) having a 3/4 in 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 2
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