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UL Listed Door Lock

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  • What Is UL 10C Certification and Why Does It Matter for Fire-Rated Door Locks?
    UL 10C is an American standard for positive pressure fire tests of door assemblies, including the locks installed within them. A UL 10C certified door lock has been independently verified to maintain its structural and functional integrity under realistic fire conditions — including the pressurized
    2026-07-28
  • Why Contractors Prefer UL Fire Rated Mortise Locks for Fire Door Projects
    What Makes UL Fire Rated Mortise Locks the First Choice for Fire Door Contractors?When you are managing a commercial construction project, every hardware decision carries liability. Fire doors are not just building components—they are life-safety systems. At D&D HARDWARE Factory, we manufacture UL L
    2026-06-12
  • Demystifying the UL Listed Door Lock: What It Means for Safety
    When you walk through a commercial building, a hospital, or a school, you likely pass through dozens of fire doors without a second thought. These doors are designed to compartmentalize a building, preventing the spread of deadly smoke and flames during an emergency. However, a fire door is only as
    2026-05-11
  • Standard Level of American Mortice Lock
    Many buildings use mortise locks to ensure safety. From this we can know that when choosing a mortise lock, safety is the most important consideration. The mortise locks can be used in commercial and residential applications and provide strong security.The American mortise lock is the best choice fo
    2021-07-13
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