What’s the difference between the UL and MET Marks?

The UL and MET marks both indicate that the product has met the minimum requirements of the applicable safety standards. Additionally, both marks validate the product’s continued compliance to these standards as evidenced by periodic factory follow-up inspections.

More than 30 years ago, MET broke the UL monopoly for product safety testing & certification in the United States becoming the first OSHA-licensed Nationally Recognized Testing Laboratory (NRTL) in the U.S. The NRTL mark is required under federal law for products used in workplaces in all 50 states.