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...
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, by United Doors and Locks Rim, Surface Vertical Rod, Concealed Vertical Rod: Choosing an Exit Device
Rim, surface vertical rod, concealed vertical rod or mortise. The door configuration decides, and a removable mullion is often the cheapest answer to a pair.
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, by United Doors and Locks Panic Hardware vs Fire Exit Hardware
Fire exit hardware is panic hardware additionally listed for a rated door assembly. The difference you can see on site is dogging, and why fire...
