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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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HUA WEI Plenum Ratings for Cable Ties Introduction

HUA WEI INDUSTRIAL CO., LTD. is Taiwan supplier and manufacturer in designing and manufacturing of cable ties. HUA WEI has been offering our customers high quality Cable ties, Plastic cable ties, stainless steel cable ties, cable markers, security seal, fasteners, cable clips, cable clamps, tie mounts, cable tie accessories, expansion anchors ,PCB supports and plastic screws, cable protection, wrapping bands, tarpaulins, wiring ducts, bushing, conduits and fittings, wire terminations, wire connectors, end-cord ferrules, terminals, application tools, cable tie guns, crimping tools, wiring duct cutter since 1976. With both advanced technology and 40 years experience, HUA WEI always make sure to meet each customer's demand.

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