Case Depth: 80 mm Backset: 53 mm features: Mortice security deadlock Approved by insurance companies and the police Replaces Chubb 3G114 3 Keys supplied are suitable for doors up to 50 mm thick Forend: Stainless steel or brass Box strike: Painted to match forend Force resistant, anti drill, anti-pick and anti-saw security features Supplied with one plain escutcheon and one escutcheon with a cover plate, finished to match the faceplate/strike Tested to BS3621:2007 EN1634-1 assessed for use on 60 minute timber fire doors