General description The Union 2134E British Standard 5 lever mortice deadlock is designed for external timber doors, suitable for doors up to 54mm thick. It features a secure 20mm deadbolt that can be locked or unlocked by a key from either side, providing enhanced security against unauthorized access. The lock includes anti-pick, anti-saw, and anti-drill security features, along with a chamfered bolt design that improves resistance under side load testing. This deadlock is recommended by insurance companies and is approved by the police Secured by Design initiative. Technical specifications Finish: Satin Brass Case Size: 79.5mm x 71.5mm (3 inches) Backset: 57mm (distance from door edge to center of keyhole) Deadbolt: 20mm Security Level: 2-5 levers (higher number indicates higher security) Guarantee: 15 years Key Type: Supplied with 3 nickel-plated steel keys Key Blank Number: KB430 Rebate Kit: 2954 (available in 13mm, 19mm, or 25mm) Compatibility and accessories Compatible with