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Glossary Terms - I

Inactive Door

( or INACTIVE DOOR LEAF) – The leaf of a pair of doors that usually does not contain a lock but is secured by surface bolts, flush bolts or other securing means. This door frequently contains the strike or keeper in which the active door latches.

Indicator Button

A part of the lock trim incorporated into a Hotel locking function which indicates on the outside of the door that the Deadbolt or inside Shut-out feature is being projected and that the room is occupied.

Interchangeable Core Cylinder

A cylinder that can be removed from the lock by use of a CONTROL KEY, and is Interchangeable with other cores within the system.