UL-2166 Complete Document History
Standard for Halocarbon Clean Agent Extinguishing System Units

Complete Current Edition:
   3RD EDITION - Standard for Halocarbon Clean Agent Extinguishing System Uni - May 10, 2017
   CHANGE 05/17 - REVISION CHANGE - CODE B - May 24, 2017
   CHANGE 10/18 - REVISION CHANGE - CODE B - Oct. 17, 2018
   CHANGE 02/19 - REVISION CHANGE - CODE B - Feb. 7, 2019
   CHANGE 10/19 - REVISION CHANGE - CODE B - Oct. 21, 2019
   CHANGE 12/19 - REVISION CHANGE - CODE B - Dec. 9, 2019
   CHANGE 05/20 - REVISION CHANGE - CODE B - May 15, 2020
   CHANGE 03/21 - REVISION CHANGE - CODE B - March 12, 2021
   CHANGE 12/21 - REVISION CHANGE - CODE B - Dec. 8, 2021

Obsolete Revision Information:
   CHANGE 08/16 - REVISION CHANGE - CODE B - Aug. 3, 2016
   CHANGE 05/15 - REVISION CHANGE - CODE B - May 29, 2015
   CHANGE 09/14 - REVISION CHANGE - CODE B - Sept. 30, 2014
   CHANGE 03/14 - REVISION CHANGE - CODE B - March 6, 2014
   CHANGE 07/13 - REVISION CHANGE - CODE B - July 25, 2013
   2ND EDITION - Standard for Halocarbon Clean Agent Extinguishing System Uni - Aug. 29, 2012
   1ST EDITION - HALOCARBON CLEAN AGENT EXTING - March 31, 1999