Key retracts bolt from both exterior and interior. Adjustable 2 3/8' - 2 3/4' backset radius corner metal deadbolt, and radius corner heavy duty deadbolt strike included.. 1-3/4' thick doors standard. Not designed for doors less than 1-3/4' thick.
Society Brass Deadbolt Features:
· Achieves ANSI A156.2 Grade 1 Security - as established by the American National Standards Institute.