ISO country code of CA for Canada or US for the United States, or both CA and USĪdditionally, a product name and issue/serial number or alphanumeric control number may also appear on a certified product.Īdditional elements and markings may be present for products that comply with UL’s certification service and factory inspection requirements for Europe.The UL Enhanced and Smart Marks for the United States and Canada for the Listing service consist of: Issue/serial number or alphanumeric control number.The UL Listing Marking appearing on a product typically consists of four required elements: There are two options for the marks for UL’s Listing service, as noted below. All of the products carrying these marks are covered by our Follow-Up Services program to determine that products continue to be manufactured in compliance with UL’s safety requirements. These marks appear on end products and complete components suitable for factory and field installation. A combination mark indicates compliance with both Canadian and U.S. Products carrying marks for Canada have been evaluated to Canadian safety requirements, which may be somewhat different from U.S. There are multiple variations of marks for UL’s Listing service, some of which are for use in the United States, others for use in Canada and still others for use in both markets.
These marks are seen commonly on appliances and computer equipment, furnaces and heaters, fuses, electrical panel boards, smoke and carbon monoxide alarms, fire extinguishers and sprinkler systems, personal flotation devices, bullet resistant glass, and thousands of other products. If a product carries one of these marks, it means UL found that representative product samples met UL’s requirements.