General description The Union 2134E British Standard 5 lever mortice deadlock is designed for external timber doors, suitable for both left and right hinges. It accommodates doors up to 54mm thick and features a satin brass finish. The deadlock provides enhanced security with a 20mm deadbolt that is locked or unlocked by a key from either side, offering resistance against unauthorized access. Technical specifications Forend Finish: Brass (Striking Plate Finished to match forend) Case Size: 79.5mm x 71.5mm (3 in) Backset: 57.5mm Deadbolt: 20mm Security Features: Anti-pick, anti-saw, and anti-drill Chamfered bolt design for improved performance under side load testing Supplied with 3 steel nickel plated keys Key Blank Number: KB430 Rebate Kit: 2954 (available in 13mm, 19mm, or 25mm) Other information Recommended by insurance companies Kitemarked to BS3621: 2007 (British Standard) Approved by the police Secured by Design initiative 15 Year guarantee