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Weinstein & Holtzman School

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Inactive Door (or leaf)

That leaf of a pair of doors that does not contain a lock, but is bolted when closed, and to which the strike is fastened to receive the latch or bolt of the active door.

Indicator Button

A device used in connection with a hotel lock to indicate whether or not the room is occupied.

Integral (locks and latches)

A term used to describe a type of mortise lock having cylinder in the knob.

Invisible Hinge

A hinge so constructed that no parts are exposed when the door is closed.
 

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