Euro Cylinders
Euro Cylinders are required when using a Euro Mortice Lock. They come in different lengths to suit a variety of door thicknesses, and are available in a key/key version or key/thumb turn. Dual function means a key can be left in the cylinder on the inside and still allow a key to be inserted to operate the lock from the outside.
Please note, that use of a key/key version qualifies as a deadlock, whereas a key/thumb turn does not.