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UL 181A

4th Edition, March 22, 2017

Complete Document

UL Standard for Safety Closure Systems for Use with Rigid Air Ducts

Includes all amendments and changes through Revision Page(s) , March 22, 2017

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Product Details:

  • Revision: 4th Edition, March 22, 2017
  • Published Date: March 22, 2017
  • Status: Active, Most Current
  • Document Language: English
  • Published By: UL (UL)
  • Page Count: 35
  • ANSI Approved: Yes
  • DoD Adopted: No

Description / Abstract:

These requirements cover closure systems for use with factory-made rigid air ducts or air connectors complying with the Standard for Factory-Made Air Ducts and Air Connectors, UL 181. Closure systems consist of pressure sensitive tapes, heat-activated tapes, and mastics.

Closure systems are intended for use with rigid air ducts installed in accordance with the International Mechanical Code (IMC), International Residential Code (IRC), International Energy Conservation Code (IECC), Uniform Mechanical Code (UMC), Standard for the Installation of Air Conditioning and Ventilating Systems, NFPA 90A, and the Standard for the Installation of Warm Air Heating and Air Conditioning Systems, NFPA 90B; and/or other Model codes.