Guardian Services, Inc.
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Underwriters Laboratories Inc. (UL) is an independent, not-for-profit product safety testing and certification organization. UL has tested products for public safety for more than a century. Each year, more than 16 billion UL Marks are applied to products worldwide.

UL has recently made a database of UL certified products available on the Web.  This searchable database may be found at

(Note:  UL is not affiliated with GSI and does not endorse GSI's Web site.  Provision of this link is for convenience of visitors to GSI's web site and does not imply endorsement by GSI of UL's services nor the products certified by UL.)

Last revised 08/29/16

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