Door Thickness - Standard applications 32 to 50 mm. Handing - Reversible Backset - 60 mm standard, 89 and 127 mm available on application. Case - High purity zinc alloy case and back plate. Bolt - Standard stainless steel fire rated up to 4 hours. Input Voltage - Multi voltage between 12V to 24V Patent Protection - The following features are protected by patents in Australia and overseas: Hub selection Cylinder fixing Hub monitoring Deadlocking monitoring