Arrow Heavy Duty Double Cylinder Cylindrical Deadbolt. Lock or unlock door from outside and inside with key. Â Ideal for doors with glass to prevent intruders from breaking glass to enter when premises are vacant. Backset is 2 3/4. Finish is satin bronze. (612/US10).
WARNING: Double cylinder locks are a life safety hazard in times of emergency and their use is not recommended. Installation should be in accordance with existing code only.