UL-181 and ULC S-110 Class 1 Air Duct, wrapped with R4.2 insulation, 2-ply black polyester laminated inner core and an outer jacket made of fiberglass reinforced metalized film laminate. Suitable for use with various types of ventilation, heating and cooling systems.
Features & Benefits:
- Available in 4″ Inches
- Flexible galvanized steel wire helix
- R-Value: R-4.2
- 2-ply black polyester inner core
- Fiberglass reinforeced metalized outer jacket
- Maximum flame spread index not over 25
- Maximum smoke developed index not over 50
- Maximum air velocity 4000 fpm
- Maximum rated pressure:
- Positive 10 in. wg/ intermittent; 6 in. wg / continuous
- Negative 0.5 in. wg
- Operating temperature range: 250°F (120°C) intermittent:
- 2 in. wg: -20 to 180°F (-28 to 82°C)
- 6 in. wg: -20 to 140°F (-28 to 60°C)
