PRODUCT COVERED
Class 1 Factory Made Flexible Air Ducts produced in 2 in. and 2-1/2 in. diameter sizes.
PRODUCT DESCRIPTION
The air duct consists of a wire helix and nylon/polyester film core or aluminum core covered with fiberglass insulation and a vapor barrier. The hybrid duct models consists of an air duct with aluminum core that is interlocked with a 3 ft. section of polyester/nylon core on one end of the duct.
MODELS
2 inch Model Nos. UPC- followed by 26C, 26CR4, 26CR6, 26CR8, 25, 25-R4, 25-R6, 25-R8, 26TCH, 26TCHR4, 26TCHR6, 26TCHR8, and 26TDHR4.
2-1/2 in. Model Nos. UPC- followed by 226, 226R4, 226R6, 226R8, 225, 225R4, 225R6, 225R8, 226H, 226H-R4, 226H-R6, 226H-R8, and 226DH-R4.
RATINGS
UL 181
CAN/ULC-S110 |
Classification |
Class 1* |
*Class 1 – Air ducts having a flame-spread index of not over 25 without evidence of continued progressive combustion and a smoke-developed index of not over 50.
Rated Pressure and Velocity
Maximum Rated Pressure (Positive): 4 in. w.c.
Maximum Rated Pressure (Negative): 0.5 in. w.c.
Maximum Rated Velocity: 5000 FPM
Note: A representative sample of the listed devices has been tested, investigated and found to comply with the requirements of UL 181 and CAN/ULC-S110
and are identified with the ETL Listed Mark.
