The tailpiece on the outside cylinder has been cut to short or is not connected to the hub.
The tailpiece on the outside cylinder has been cut to long as is protruding into and interfering with the lock mechanism.
If the lock has been re-keyed, the cam on the back of the inside cylinder (which operates the safety release) has not been reset correctly the safety release feature will not work.
Yes, but if the door is outward opening or metal frame you will need to order the version of the 001 to suit these applications.
The deadlocking of the 355 is a very manual process, as the internal and external locking operate independently.
