Fixed dummy handle
A fixed dummy handle pushes or pulls the door leaf and does not rotate to drive a lock mechanism.
Lock types
Distinguish passage, privacy and fixed pull functions instead of judging function by appearance.
Key retention in padlocks
Some padlocks require the shackle to be locked before the key can be removed. This is a key-removal condition, a separate selection item from keyed-alike management, replaceable cylinders and shackle clearance.
Passage-function lock
Passage function uses a latch to keep a door closed without providing locking, commonly at interior locations that do not require privacy locking.
Privacy-function lock
A privacy-function lock provides indoor privacy control, usually locked by an inside button or thumbturn. It does not describe an exterior-door security rating.