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(Covered in ANSI/BHMA Standard A156.3)

Exit Device. (Also called panic device, panic hardware, panic bolt and crash bar.) A type of lock having an inside release bar. When depressed, the release bar (called crossbar, push pad, etc.) retracts the latch bolt, thus permitting the door to be opened. Most codes require that the activating portion of the release mechanism extend not less than half way across the door. A dogging device allows the release bar to be locked down so that the latch bolt remains retracted and the door can be used as a "push-pull" door. They may or may not be key operated from the outside. These devices have been investigated for panic and are listed by a nationally recognized independent testing laboratory and are also under in-plant follow-up inspection service. They may not be used on fire doors.

Fire Exit Hardware. These are exit devices which have also been labeled for use on fire doors. Dogging devices are not permitted on fire exit hardware as fire doors must have an active latch. When inspecting exit devices on fire doors, look for both labels, one for panic and one indicating the device is fire exit hardware. The label on the fire door itself should also indicate that it is a fire door suitable for use with fire exit hardware.

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