News
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, by United Doors and Locks Access Control and the Fire Alarm: Getting the Sequence of Operations Right
Electrified openings fail inspection because nobody wrote down what the door does when the alarm sounds. The sequence of operations, and the five checks that...
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, by United Doors and Locks Fire Door Assemblies: What the Label Lets You Change, and What Voids It
The label certifies the whole assembly, not the door leaf. What NFPA 80 lets you change in the field, what voids the rating, and the...
