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Plenum Ratings for Cable Ties

UL AH-1 & AH-2 Certification
UL AH-1 & AH-2 Certification

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.

1. The peak heat release rate shall be ≤ 100 kW
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 TypePlenum rating
Metallic Cable ties and Fixing DevicesAH-1
Non-metallic or Composite Cable ties and Fixing DevicesAH-2

We have comprehensive range of plenum rated products, please contact us for more information.

Updated 2019/1/17

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Over 40 Years of World-Class Wire & Cable Management Products Manufacturing | HUA WEI

Based in Taiwan, HUA WEI INDUSTRIAL CO., LTD. is a professional manufacturer of cable ties since 1976.

IATF 16949, ISO 9001, and ISO 14001 cable tie green manufacturing with UL, CE, CSA, ABS, DNV GL, BV and CQC accreditations, as well as meeting RoHS and REACH regulations. HUA WEI's ten billion cable tie production capability has allowed them to become one of the largest cable tie manufacturers in Asia.

Cable tie accessories, cable clips and clamps, cable makers, expansion anchors, PCB supports and screws, cable protections, wire terminations and application tools are available, along with cable ties.

HUA WEI has been selling customers high quality cable ties worldwide. With over one- hundred 180~1000 tons molding machines, advanced technology and 40 years of experience, HUA WEI ensures each customer's demands are met.

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