Specific guidelines and rules
A clear explanation of UL product certification will help customers and others understand the meaning of "UL Listed," "UL Classified," "UL Performance Verified" or "UL Recognized Component."
UL Listing
UL Listing means that Underwriters Laboratories Inc. (UL) has tested representative samples of the product and determined that it meets 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)
- 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 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
- Standards of other national and international organizations
It is 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
- UL Classification Mark for Canada
- 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 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
- UL requirements, such as the UL XTR Structured Cabling Program
It is 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 Services 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." |
| "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.
References to UL Component Recognition
| Sample correct references | Incorrect references |
| "UL Recognized Component." | "UL Approved 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." |
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