Web Reference: Feb 13, 2026 · To avoid these risks, it's important to understand what parts make up a door lock and what each one does. In the US, cylindrical locksets, separate deadbolts, and knob configurations are most common. All lock requirements are regulated by ANSI/BHMA and UL standards. Select a product below for details, technical information, and install instructions. dormakaba locks meet or exceed the requirements of ANSI/BHMA Grade 1 or Grade 2 and have UL fire rating. Grade 1 mortise and cylindrical locksets are independently tested for durability to over 10 million cycles. In its simplest implementation, a key operates one lock or set of locks that are keyed alike, a lock/key system where each similarly keyed lock requires the same, unique key.
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