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SUBJECT NO.
STANDARD NO.
EFFECTIVE DATE
ANNOUNCEMENT LETTER DATE
1
UL 1
04/01/2019
10/18/2017
4
UL 4
02/01/2022
05/18/2021
5
UL 5
05/17/2010
05/21/2007
5
UL 5
01/18/2012
08/12/2010
5
UL 5
03/20/2013
10/07/2011
5A
UL 5A
07/01/2010
08/21/2008
5C
UL 5C
01/31/2012
06/02/2010
6
UL 6
06/30/2006
06/30/2004
6
UL EN 50086
10/01/2018
04/17/2018
6A
UL 6A
01/05/2010
12/05/2008
8
UL ANSI-UL 8 CAN-ULC-S554
02/14/2011
10/02/2005
10
ICC ICC 500
07/31/2017
09/15/2015
10B
ULC CAN-ULC-S104-10
06/30/2012
04/20/2011
10D
UL 10D
04/30/2016
07/25/2014
13
UL 13
05/29/2006
01/17/2006
13
UL 13
12/05/2019
06/06/2018
13
UL 13
11/30/2022
01/08/2021
18
NSF NSF 18
09/23/2013
09/15/2011
19
UL 19
03/05/2021
01/08/2019
20
UL 20
06/01/2006
06/23/2004
21
CSA CSA 8.1-2015 and CSA 8.3-2015
02/01/2019
22
UL 22
05/01/2012
01/07/2011
25
UL 25
06/11/2007
06/10/2005
0032
UL 32
04/04/2016
05/14/2014
32
UL 32
12/15/2005
02/02/2005