Glossary of Terms
An electrical device that releases the latch bolt of a lock, to permit entry from a remote location or as part of an access control system.
A plate long enough to span a lock case and having holes for knob bushing, bit key, cylinder, turn knob and similar operating members as required.
A door-locking device designed to grant instant exit by pressing on a cross bar that releases the locking bolt or latch.
Extension Flush Bolt
A flush bolt in which the connection between bolt head and operating mechanism is by means of a rod inserted through a hole bored in the door used to secure the inactive leaf of a pair of doors.
A device used to provide long backsets in bored locks.