UL-181 › Complete Document History
Standard for Factory-Made Air Ducts and Air Connectors
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11TH EDITION - Standard for Factory-Made Air Ducts and Air Connectors - July 25, 2013
CHANGE 04/17 - REVISION CHANGE - CODE C - April 18, 2017
CHANGE 12/21 - REVISION CHANGE - CODE C - Dec. 29, 2021
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Obsolete Revision Information: |
CHANGE 10/08 - REVISION CHANGE - CODE D - Oct. 27, 2008
10TH EDITION - FACTORY-MADE AIR DUCTS & AIR - May 24, 2005
CHANGE 05/03 - CHANGE 05/03 FOR 9TH EDITION - May 15, 2003
9TH EDITION - FACTORY-MADE AIR DUCTS & AIR C - April 4, 1996
DOD ADOPTION - FYI ONLY: DOD ADOPTED - June 20, 1994
CHANGE 11/90 - FACTORY-MADE AIR DUCTS & AIR C - Nov. 20, 1990
1990 EDITION - FACTORY-MADE AIR DUCTS & AIR C - April 6, 1990
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