General description This Union Strongbolt 2103S 3 Lever Mortice Deadlock is a high-security lock designed for both residential and commercial doors. It features a polished brass finish that not only enhances its appearance but also provides corrosion resistance. The lock utilizes a 3-lever mechanism for reliable security and ease of use, making it a practical choice for various applications. Technical specifications Finish: Polished brass Case size: 81mm x 89mm Backset: 57mm (distance from door edge to center of keyhole) Bolt diameter: 14mm Number of levers: 3 Locking mechanism: Deadbolt with key operation from both sides Resistance features: Anti-pick, keyhole protection, hardened steel pins against sawing Compatibility and accessories Can be keyed alike with model 2203S for key duplication convenience Installation Designed for UK standard mortice doors Features plastic splinter guards for easy installation Radius inner forend facilitates straightforward fitting without additional