Keyed Alike Single Deadbolt Door Handle Set – 18 Matching Keys for Convenient Access • Convenient Keyed Alike System: Includes 18 identical keys, allowing you to unlock and secure all included locksets with just one key. No need to carry multiple keys for different doors. • Secure Single Deadbolt Design: Locks and unlocks from the outside using a key, while the inside can be quickly secured or released with a thumbturn button. Provides reliable everyday security for residential and light commercial use. • Universal Fit for Standard Doors: Designed for doors between 13/8 inch and 13/4 inch thick (35mm to 45mm). Features an adjustable backset of either 23/8 inch or 23/4 inch (60mm or 70mm) for compatibility with existing installations. • Easy DIY Installation: Fits most standard predrilled doors with a 54mm diameter hole. No special tools required – just a Phillips screwdriver and a few minutes are enough for a secure and proper fit. • Tested for LongLasting Performance: Built to ANSI Grade 3 standards and tested for over 200,000 use cycles, ensuring dependable strength, durability, and consistent operation over time. Ideal Use Scenarios: for homes where multiple exterior doors need to be secured with one convenient key. Suitable for rental properties where quick, consistent locking is essential for tenant safety. Useful for small businesses needing simple, unified access control for back and side entry points. This hardware set combines convenience, security, and ease of installation, making it a practical choice for reliable door protection in both residential and small commercial settings.