ERA 263 & 363 Fortress BS Euro Deadlock With CylinderThe British Standard High Security Fortress Mortice Lock meets the new BS 3621: 2007 standard, which meet the exacting demands of the insurance companies and the police. BS3621: 2004 standard meets the exacting demands of insurance companies and the police Higher security levels delivered by a 20mm bolt throw on every lock Laminated hardened steel plates in the bolt Hardened steel plates on lock case resists drilling Supplied with a 70mm 6 pin high