Summary of Topics s489B_1_sum.htmlSummary of Topics
This revision of ANSI/UL 489B dated May 19, 2021 is being issued to update the title page to reflect the most recent designation as a Reaffirmed American National Standard (ANS). No technical changes have been made.
As noted in the Commitment for Amendments statement located on the back side of the title page, UL and CSA are committed to updating this harmonized standard jointly. However, the revisions dated May 19, 2021 will not be jointly issued by UL and CSA as these revisions address UL ANSI approval dates only.