Standard 181A, Edition 4
UL 181A

Standard for Closure Systems for Use With Rigid Air Ducts

UL CSDS Proposal Edition 4 Published Date: February 03, 2017 Last Revision: December 29, 2021

Summary of Topics b0181a_4_20170203_sum.html

Subject 181A

Bulletin Dated: February 3, 2017

SUMMARY OF TOPICS

The following is being proposed:

1. Reaffirmation and Continuance of the Fourth Edition of the Standard for Closure Systems for Use with Rigid Air Ducts , UL 181A, as an American National Standard
Back to Standard 181A, Edition 4

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