The Union 2100 Strongbolt Mortice Deadlock is a high-security lock designed to meet British Standard BS3621:2007. Featuring 5 levers and built-in anti-drill and anti-saw defenses, it offers robust protection for your property. Its radius inner forends and familiar footprint allow for easy first-fit installation or hassle-free retrofitting without the need for additional tools, saving time and preserving door aesthetics. Trusted for reliability and strength, this lock is an excellent choice for secure and compliant door fastening.