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By order of the publisher, historical UL documents are not returnable for any reason. Once you place an order for an historical document, we cannot issue a refund, credit, or exchange of any kind.
Purchase of this document includes all current amendments. 3-Year subscription service also available. Reference UL 1666 Subscription.
 

Document History

  1. UL 1666


    Test for Flame Propagation Height of Electrical and Optical-Fiber Cables Installed Vertically in Shafts

    • Most Recent
  2. UL 1666


    Test for Flame Propagation Height of Electrical and Optical-Fiber Cables Installed Vertically in Shafts

    • Historical Version
  3. UL 1666

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    Test for Flame Propagation Height of Electrical and Optical-Fiber Cables Installed Vertically in Shafts

    • Historical Version