General description The Yale PM562 British Standard 5-lever mortice deadlock provides a high level of security for external timber doors. It features a single deadbolt that can be locked or unlocked with a key from either side. This deadlock is recommended by insurance companies and is approved by the police Secured by Design initiative, making it an ideal choice for securing both residential and commercial doors. Technical specifications Finish: Polished Brass Case Size: 6mm x 89mm (2.5 inches) Backset: 45mm (distance from door edge to center of keyhole) Security Level: 5 lever mechanism Guarantee: 15 years Compatibility and accessories Compatible with external timber doors Designed for use with standard mortice lock fittings Installation Install in a prepared mortice hole matching the case size Ensure the backset measurement (45mm) aligns with door specifications Secure the lock with appropriate screws and ensure proper alignment of the deadbolt and keyhole Usage Lock or unlock the