5 Lever British Standard Deadlock – Electro Brass (78mm Case / 57mm Backset)

A high security mortice deadlock for use on internal and external doors in both commercial and domestic buildings.. The 5 lever mechanism and British Standard certification provide insurance-approved security, while the electro brass finish offers. a smart, durable appearance that suits a wide range of door styles and existing lock cut-outs with a 78mm case.. Key Features. 5 lever mortice deadlock offering enhanced protection against picking and forced entry.. Rigorously tested to BS 3621:2007 for insurance-approved security on external doors.. Anti-saw and anti-drill features on the bolt and lock case to help resist common forms of attack.. 20mm deadbolt throw for secure locking into the frame.. 57mm backset – ideal for doors with existing deeper lock mortices or where additional handle clearance is required.. Suitable for use with standard mortice deadlock escutcheons and door furniture where a separate latch is not required.. Electro brass faceplate and keep for a clean, professional finish on the door edge.. Can be fitted to left- or right-handed doors.. Supplied complete with 2 keys, strike plate/keep and fixing screws.. Typical Applications. Front and back doors in domestic properties where BS 3621 deadlocks are required by insurers.. Entrance and exit doors in commercial premises, offices and retail units.. Upgrading existing 3 lever or non-BS deadlocks to meet current security requirements.. Refurbishment and new-build projects needing a robust, insurance-compliant deadlock.. Replacement of older 78mm case deadlocks without major alteration to the door.. Specifications. Lock type. 5 lever British Standard mortice deadlock. Case depth. 78mm. Backset. 57mm (to keyhole). Bolt throw. 20mm (approx.). Faceplate size (H × W). 125 × 25mm. Keep size (H × W). 150 × 29mm. Case height. 80mm. Case thickness. 18mm. Finish. Electro brass. Standards & approvals. BS 3621:2007. Supplied with. 2 keys, keep/strike plate, fixing screws