PRODUCT COVERED
GAF - Flexible Air Ducts - Class 1 - UL 181.
PRODUCT DESCRIPTION
The duct consists of a wire helix and polyester film core covered with fiberglass scrim and facing material.
MODELS
Air Ducts Class 1 Flexible sizes 4 - 20 inches
MODEL SIMILARITY
N/A
RATINGS
| UL 181 |
Reaction to Fire Classification |
Class 1* |
FLAME SPREAD RATINGS
| Test Standard |
Flame Spread |
Smoke Development |
| UL 723 |
25 or less |
50 or less |
*Class 1 – Air ducts and air connectors having a flame-spread index of not over 25 without evidence of continued progressive combustion and a smoke-developed index of not over 50.
LIMITATIONS
Maximum Positive pressure 16 in. w.c.
Maximum Negative Pressure 1 in. w.c.
Maximum rated velocity: 4000 FPM
Minimum size of duct: 4" Diameter
Maximum size of duct: 20" Diameter
Note: A representative sample of the listed devices has been tested, investigated and found to comply with the requirements of the Standard(s) for UL 181, "Standard for Factory Made Air Ducts & Connectors" and are identified with the ETL Listed Mark.
