TSS Retro Fit British Standard 5-Lever Mortice Deadlock BS3621 High-Security Door Lock 40 mm Backset Dead for External Doors with Fixings (Brass, 3 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