UL label

Definition

Construction

  • A seal of certification attached by Underwriters' Laboratories, Inc. to building materials, electrical wiring and components, storage vessels, and other devices, attesting that the item has been rated according to performance tests; is from a production lot that made use of materials and processes identical to those of comparable items that have passed fire, electrical hazard, and other safety tests; and is subject to the UL reexamination service.
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