The MEDIATOR multiple locking system in the tubular frame version is available in various backset dimensions.Self-locking: bolt and latch are locked - higher security Additional stable hook bolts for increased burglary protection.The hook bolts are not used to press the door seals.The system only works reliably without lateral pressure on the bolts.Mechanical sequence control between cross and control latch Integrated panic function via the inside handle Change function for unlocking with a key from the outside Low backset dimension: 15 mm