Plenum Ratings for Cable Ties
In the United States & Canada, cable ties installed in areas used for the exchange of environmental air (air-handling spaces or “plenums”) are required to be classified as AH-1 or AH-2. UL 62275 includes a Smoke and Heat Release Test which results in a specific minimum index of characteristics. This index is in line with the national mechanical installation codes.
2. The peak normalized optical density shall be ≤ 0.5
3. The average normalized optical density shall be ≤ 0.15
The plenum ratings according to product type are:
Product Type | Plenum rating |
Metallic Cable ties and Fixing Devices | AH-1 |
Non-metallic or Composite Cable ties and Fixing Devices | AH-2 |
We have comprehensive range of plenum rated products, please contact us for more information.
Updated 2019/1/17