ERA 334 Fortress Fortress BS BS Euro Keyless Egress Key & Turn Sashlock With CylinderThe British Standard High Security Fortress Mortice Lock meets the new BS 8621: 2004 standard, which meet the exacting demands of the insurance companies and the police. BS8621: 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 6 Pin High