Underwriters Laboratories

A CE Marking is a European marking of conformity that indicates that a product complies with the requirements of the applicable European laws or directives. The European Community established the CE marking system to ensure free movement of products between member countries and to remove internal barriers to trade. The CE marking is a legally required marking in the European Union (EU) and applies to a variety of product categories. It is usually a manufacturer's self-declaration that the product complies with European laws and may not include assessment to safety requirements.

Because most products bearing the CE mark are not required to be third-party certified, are not subject to ongoing factory surveillance of production, and may not be compliant with applicable U.S. product safety standards, they are not considered to be Listed as defined in NFPA and ICC model codes and standards. Click here for more information.

No, UL Marks may only be applied at manufacturing facilities authorized by UL. Any violations should be immediately reported to UL. The only exception is if UL authorizes the UL Mark to be applied in the field as a result of a field inspection.  During a field inspection UL representatives determine if the product complies with applicable safety standards and requirements, and if compliance is determined product labeling is performed in the presence of the UL representative. However, this takes place only after the local authority having jurisdiction has been consulted. Click here for additional details.

Without seeing the documentation it is difficult to determine the nature of a manufacturer's claim. There are several possibilities:

• The product may have been previously certified by UL, but the certification has since been discontinued.
• The UL certification may be very recent and is not yet available in the Online Certifications Directory. In this case, the manufacturer should be able to provide documentation from UL confirming the certification.
• The manufacturer is making a "self-declaration" claim that has not been verified by an independent third party such as UL, and the product would not be considered to be ‘Listed" as defined in NFPA or ICC model codes.
• The product may be certified by another third party organization using UL's Standards for Safety.

UL Listed products are required to carry a marking to identify the Listed company. This identification can consist of the company name (or an important portion thereof), a trade name or trademark, or the Listee's UL file number.

Identification of the Listee appears on the product itself or, in some cases, on the smallest unit container in which a product is shipped. An index of trade names and trademarks is also included in UL's Online Certifications Directory.

An authorized use of the UL Mark is the manufacturer's declaration that the product was manufactured in accordance with all applicable requirements, and was in compliance with those requirements when it was shipped from the factory. When a UL Listed product is modified after it leaves the factory, UL can neither indicate that such modifications void the UL Mark, nor confirm that the product continues to meet safety requirements unless the field modifications are specifically investigated by UL. It is the responsibility of the Authority Having Jurisdiction to assess the acceptability of the modifications or to determine if the modifications are significant enough to require one of UL's Field Engineering Services staff to evaluate the modified product. UL can assist the AHJ in making this determination. For information on UL field evaluations click here.

Yes, UL is committed to protecting the integrity of the UL Mark and, by extension, protecting the individuals and communities that rely on UL. You can help correct potential problems with UL certified products by filing a product incident report, which will start a formal investigation into the problem. The product incident report program covers problems related to:

• Products alleged to have malfunctioned during use,
• Products on which UL Marks are allegedly misused,
• Products that cannot be installed in accordance with the appropriate model installation code,
• Products that do not appear to comply with the requirements used to investigate and certify them,
• Products that display a counterfeit UL Mark,
• Product markings, packaging, literature and web site content that imply an inaccurate or inappropriate association between the product and a UL certification.

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UL Standards for Safety are not needed to determine code compliance, even if the installation code indicates that a product or material must comply with a specific UL Standard. The Guide information in UL's Online Certifications Directory, or in UL's published product directories, usually identifies the standard(s) used to investigate and certify products in a particular product category. This information can assure code officials that a product was evaluated to the appropriate product standard, which is often referenced in a model code or regulation. If you wish to view the scope of a particular UL standard, click here.