TSS Retro Fit British Standard 5 Lever Mortice Deadlock BS3621 High Security Door Lock 40 mm Backset Dead for External Doors with Fixings (Satin Chrome, 2.5 Inch)

Check Measurements Before Ordering Ensure compatibility by comparing all measurements with your existing Mortise Lock before purchase. Full measurements in images. British Standard / High Security Certified to BS3621 for insurance-approved security. High-strength 5-lever mechanism with anti-drill and anti-saw protection helps resist forced entry and enhances door security. Retro-Fit Replacement – 40 mm Backset (for 2.5") 53mm Backset (for 3") Designed with the same dimensions as classic UK mortice deadlocks, including a 40 mm backset. Ideal for upgrading old or worn locks without altering the door. Supplied with Fixings & Accessories Includes 2 keys, matching faceplate, strike/keep plate, screws and escutcheons — everything required for a complete installation with no extra parts needed. Durable Traditional 5-Lever Mechanism Reliable lever system (not detainer) provides smooth, consistent locking performance and long-term durability for external timber doors. Versatile High-Security Deadlock Suitable for front doors, rear doors, and side entrances where a strong, insurance-compliant dead lock is required — perfect for homes, rental properties and commercial entrances., Weight: 1.7526749829 pounds, Manufacturer: TSS