UL-268A › Standard for Smoke Detectors for Duct Application
Included in this current edition are the following subparts:
4TH EDITION - Dec. 11, 2008
CHANGE 09/09 - Sept. 25, 2009
CHANGE 10/14 - Oct. 2, 2014
CHANGE 08/16 - Aug. 12, 2016
CHANGE 08/20 - Aug. 20, 2020
CHANGE 08/23 - Aug. 25, 2023
CHANGE 09/09 - Sept. 25, 2009
CHANGE 10/14 - Oct. 2, 2014
CHANGE 08/16 - Aug. 12, 2016
CHANGE 08/20 - Aug. 20, 2020
CHANGE 08/23 - Aug. 25, 2023
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Document Number
UL-268A
Revision Level
4TH EDITION
Status
Current
Publication Date
Dec. 11, 2008
Page Count
102 pages