Canadian Standards Association
Certification of Compliance
The "C" and "US" indicators adjacent to the CSA Mark signify that the product has been evaluated to the applicable CSA and ANSI/UL Standards, for use in Canada and the U.S. respectively. This "US" indicator includes products eligible to bear the "NRTL" indicator. NRTL, i.e. National Recognized Testing Laboratory, is a designation granted by the U.S. Occupational Safety and Health Administration (OSHA) to laboratoriews which have been recognized to perform certification to U.S. Standards.
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