Classroom Knob Locksets

This indicates the lockset’s specific type of inside and outside locking method, which correlates to a particular ANSI numerical code.

Dummy have no locking or latching mechanism to secure doors. They allow users to pull the door open and keep them closed with an external latching mechanism.
Half Dummy have a handle that does not operate on their exterior with a blank plate on the interior. They are used on doors that are accessed frequently from the outside and do not require locks or latches.
Passage have no locking mechanisms to keep doors secure. They are used for interior doors between spaces where there is no need for security.
Closet have an exterior handle that does not move with a keyway and no internal locking or unlocking functions. The inside handle can be activated for egress at all times.
Exit have outside handles that do not lock or unlock and do not move. They provide free egress from the inside.
Privacy have a thumb-turn or push-button lock on the interior handle and an emergency keyway on the exterior. Their locks engage from the interior handle, which then unlocks the door for rapid exits.
Storeroom have an external keyway without internal locking or unlocking functions. They are often used on storeroom doors, or in other secure areas that are unoccupied and where controlled access is needed.
Office have an external keyway with an internal thumb-turn or push-button lock. When they are unlocked, the handles will work from either side. When locked, neither side of the handle will operate when engaged.
Apartment have an external keyway on the deadbolt rather than on the handle itself, with an internal push-button or thumb-turn locking mechanism. When the inside handle is engaged, the door automatically unlocks.
Dormitory have an external keyway that is not on the handle itself, and an internal thumb-turn or push-button lock. They include a latch that automatically locks the door every time it closes.
Entrance have an external keyway and an internal push-button or thumb-turn locking mechanism. They unlock via key or when the internal handle is operated.
Classroom have a key-turn hole on the outside, but are blank on the inside. When locked from the outside with a key, the inside handle cannot be moved.
Communicating have a keyway located on the trim rather than on the handle itself. Both sides of the lock must be unlocked to open. They are often used in connected hotel rooms to allow access when both rooms are occupied by the same family or group.
Institutional have a keyway on both the interior and exterior handles that require a key to exit. When locked, the handles are rigid and do not operate. They are used in psychiatric hospitals, prisons, or other facilities where containing individuals is critical to maintain safety.

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