UL-228 › Standard for Door Closers-Holders, With or Without Integral Smoke Detectors
Included in this current edition are the following subparts:
5TH EDITION - Jan. 26, 2006
CHANGE 11/08 - Nov. 20, 2008
CHANGE 03/22 - March 11, 2022
CHANGE 11/08 - Nov. 20, 2008
CHANGE 03/22 - March 11, 2022
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Document Number
UL-228
Revision Level
5TH EDITION
Status
Current
Publication Date
Jan. 26, 2006
Page Count
50 pages