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Specific Guidelines and Rules

Specific guidelines and rules for clients with UL product certification -- Listing, Classification, Performance Verified or Component Recognition

(general guidelines and rules for clients with UL product certification)

A clear explanation of your UL product certification will help customers and others understand the meaning of "UL Listed," "UL Classified," "UL Performance Verified" or "UL Recognized Component." The following are some examples.

UL Listing

UL Listing means that UL has tested representative samples of your product and determined that they meet UL's requirements. These requirements are based primarily on UL's published and nationally recognized Standards for Safety.

References to UL and the UL Listing may include:

  • the UL Listing Mark,
  • the UL Listing Mark for Canada (if applicable), and
  • the combined Canada/U.S. Listing Mark (if applicable).

For packaging, the UL logo may be used alone as long as the product (as opposed to any Listed component in, or connected to, the product) bears the complete UL Listing Mark.

References to UL Listing


Sample Correct References

Incorrect References

"UL Listed" or "UL Listed to Canadian safety standards."

"UL Approved" or "UL Approved for Canada."

"Listed by Underwriters Laboratories Inc."

"UL Certified."

"This product is Listed to applicable UL Standards and requirements by Underwriters Laboratories Inc."

"This product has earned the UL Listing Mark."

"This product is Listed by Underwriters Laboratories Inc. Representative samples of this product have been evaluated by UL and meet applicable safety standards."

"UL Listing pending."

Whatever standards your products are Listed to by UL, no claims should be made that imply that your company itself is in any way "Listed," "Approved," or "Certified" by UL.

UL Classification

UL Classification means that UL has tested and evaluated samples of your product with respect to certain properties of the product. UL Classifies products to:

  • applicable UL requirements,
  • Standards for Safety, and
  • standards of other national and international organizations.

It's important to use the UL Classification Mark only accompanied by a statement indicating the specific scope of the Classification and a control number. Your UL Classification may include:

  • the UL Classification Mark,
  • the UL Classification Mark for Canada, or
  • the combined Canada/U.S. UL Classification Mark (if applicable).

References to UL Classification


Sample Correct References

Incorrect References

"This product is Classified by Underwriters Laboratories Inc. as to (property or properties of product tested) only." (include control number)

"UL Classified only."
"UL Approved."
"UL Certified."

"UL Classified. See complete marking on product." (Include full marking on product)

"This product is Classified by Underwriters Laboratories Inc." (without any reference to properties to which the product has been tested)

"This product is UL Classified. See the complete Classification marking below." (or elsewhere in the promotional communication)

"UL Classified." (without reference to the complete Classification marking on the product or packaging)

"Classified by Underwriters Laboratories Inc. to (appropriate national or international standard)."

"This product is UL Classified." (without any reference to the complete Classification Marking elsewhere on the promotional piece)

UL Performance Verification

UL Performance Verification means that UL has tested and evaluated samples of your product, typically against a specific performance standard. UL Performance Verifies products to:

  • National or international industry performance standards,
  • Manufacturer's proprietary (internal) standards and
  • UL requirements, such as the Levels XP Structured Cabling Program.

It's important to use the UL Performance Verification Mark only in conjunction with a statement indicating the specific scope of the Performance Verification and a control number. Your UL Performance Verification includes the UL Performance Verification Mark

Your UL Follow-Up Procedures or UL Guide information will specify whether the Performance Verification Mark should be applied as a package or as a product marking.

References to UL Performance Verification


Sample Correct References

Incorrect References

"This product is Performance Verified by Underwriters Laboratories Inc. as to (performance standard tested) only." (include control number)

"UL Performance Verified only."
"UL Approved."
"UL Certified."

"Performance Verified by Underwriters Laboratories Inc. to (performance standard tested)."

"This product is UL Verified." (without any reference to the complete Performance Verification Marking elsewhere on the promotional piece)

UL Component Recognition

UL's component recognition service covers the evaluation of components or materials intended for use in a complete product or system. These components are intended only for incorporation into other end-use products that may be eligible for UL's Listing, Classification or Certificate Service.

Since UL Recognized Components are intended for specific applications, the UL symbol can never be used in connection with the advertising or promotion of your products that are UL Recognized Components. Below are sample references to UL Component Recognition.

References to UL Component Recognition


Sample Correct References

Incorrect References

"UL Recognized Component."

"UL Approved Component."
"UL Certified Component."
"UL Listed Component."

"Recognized under the Component Recognition Program of Underwriters Laboratories Inc."

"UL Classified Component."

"This (component or material) is Recognized by Underwriters Laboratories Inc. Representative samples of this component have been evaluated by UL and meet applicable UL requirements."

"Exceeds UL requirements."

GS Mark

The UL GS Mark, a German safety mark, means that UL Demko International A/S (UL) has tested representative samples of your product and determined that they meet the safety requirements of European standards with German national deviations. UL is accredited by ZLS (Zentralstelle der Länder für Sicherheitstechnik) to perform testing, certification and inspection for the UL GS Mark. UL is accredited to do testing on following product categories:

  • household appliances,
  • laboratory equipment,
  • luminaries,
  • IT/AV equipment, and
  • some components.

References to UL and the UL GS Mark may include the UL GS Mark for Germany

For packaging, the UL logo may be used alone as long as the product bears the complete UL GS Mark.

References to the UL GS Mark


Sample Correct References

Incorrect References

"UL GS certified to European Safety standards including the German National Deviations."

"UL Listed"
"UL Listed for Germany"

"Certified by UL International Demko A/S."

"Listed by UL International Demko A/S (UL)."

"This product is certified to applicable German Standards and requirements by UL International Demko A/S."

"Meets UL International Demko A/S (UL) requirements."

"This product is certified by UL International Demko A/S. Representative samples of this product have been evaluated by UL International Demko A/S and meet applicable safety standards."

"UL International Demko A/S (UL) Listing pending."

UL only certifies products that meet German standards and UL's requirements. You should not make any claims that state or imply that your company itself is in any way "Listed," "Approved," or "Certified" by UL or Underwriters Laboratories Inc.

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