Central cylinder

In locking systems, cylinders are often required that are to be locked by several keys (user groups).

Explanation for example:

• Pos. 1 (double cylinder) is the central cylinder
• all keys (p.1 to p.5) can open this cylinder
• central cylinders are mostly front door, yard gate, basement or floor cylinders
• In GHS locking systems, there can be several central cylinders for different user groups.