PRODUCT COVERED
Flexmaster - Flexible Air Connectors - UL 181
PRODUCT DESCRIPTION
The product covered by this report are air connectors consisting of a wire helix reinforced film core, with or without insulation and vapor barrier.
MODELS
1NI, 1B, 1M, 3B, 3M, 3NI, 4B, 4M, 4NI, 9B, 9M, 9NI, 8B, 8M, 8NI, 6B, 6M, 5NI, 5B, 5M
RATINGS
| UL 181 |
Reaction to Fire Classification |
Uninsulated flexible connector |
Class 0* |
| UL 181 |
Reaction to Fire Classification |
Insulated flexible connector |
Class 1** |
FLAME SPREAD RATINGS
| Test Standard |
Flame Spread |
Smoke Development |
| UL723 |
25 or less |
50 or less |
* Class 0 – Air ducts and air connectors having surface burning characteristics of zero.
**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.
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 181:2013, "Standard for Factory Made Air Ducts & Connectors" and are identified with the ETL Listed Mark.
