Kwikset Signature Series * For use on exterior doors where keyed entry and security is needed * Featuring SmartKey® re-key technology; re-key the lock yourself in seconds in 3 easy steps * Fully reversible lever; fits both right handed and left handed doors * Fits door thickness of 1-3/8" to 1-3/4" * Features an adjustable latch to fit all standard door preparations * Handleset Deadbolt ANSI/BHMA Grade 2 Certified