General description The Union 2134E British Standard 5 lever mortice deadlock is designed for external timber doors, suitable for doors hinged on either side and up to 54mm thick. It features a 20mm deadbolt that can be locked or unlocked from either side using a key, providing enhanced security and resistance against forced entry. This lock is ideal for securing residential doors and is recommended by insurance companies. Technical specifications Finish: Satin Chrome Case Size: 67mm x 71.5mm (2.5 inches) Backset: 45mm (distance from door edge to center of keyhole) Deadbolt: Brass with hardened steel rollers Rebate Kit: 2954 (available in 13mm, 19mm, or 25mm) Keys Supplied: 3 steel nickel-plated keys Key Blank Number: KB430 Security Level: 2-5 levers (higher number indicates higher security) Compatibility and accessories Compatible with external timber doors up to 54mm thick Supplied with matching escutcheon to cover the keyhole Rebate kit available for different door thicknesses