5 Lever British Standard Deadlock – Stainless Steel Satin (78mm Case / 57mm Backset)

A high security mortice deadlock for internal and external doors in both commercial and domestic buildings.. The 5 lever mechanism and British Standard certification provide insurance-approved security, while the satin stainless steel finish offers. a modern, corrosion-resistant appearance that complements contemporary door and hardware styles.. Key Features. 5 lever mortice deadlock providing enhanced protection against picking and forced entry.. 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 engagement into the frame.. 57mm backset – ideal for doors with existing deeper lock mortices or where additional handle/escutcheon clearance is required.. Satin stainless steel faceplate and keep for a durable, corrosion-resistant, contemporary finish.. Suitable for use with standard mortice deadlock escutcheons where a separate latch is not required.. Can be fitted to left- or right-handed timber 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 older or non-compliant deadlocks to meet current British Standard security requirements.. Refurbishment and new-build projects needing a robust, insurance-compliant deadlock with a modern aesthetic.. Properties in coastal, urban or damp environments where added corrosion resistance is beneficial.. 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. Satin stainless steel. Standards & approvals. BS 3621:2007. Supplied with. 2 keys, keep/strike plate, fixing screws