Keyed Alike Door Lock Combo 3 Pack with Dead Bolt in Polished Brass,Double Cylinder Exterior Door Entry Handlesets Combination Pack,Wave Style,Left and Right Handing,Double Cylinder Deadbolt Lock - Amazon.com
TS Distributors | Double Cylinder Deadbolt
Commercial Grade Deadbolt | Cal-Royal Gate Latch -Double Deadbolt - Schlage C - US26D made by Cal-Royal.
Kwikset Juno Satin Nickel Exterior Entry Door Knob and Double Cylinder Deadbolt Combo Pack Featuring SmartKey Security 992J 15 SMT CP - The Home Depot
What Is a Double-Cylinder Door Lock? | ehow
high security deadbolt
Universal Hardware Universal Hardware Industrial Duty Commercial Double Cylinder Deadbolt, UL 3-Hr Fire ANSI Grade 1, Satin Chrome Finish UH40056 - The Home Depot
Premier Lock Satin Bronze Double Cylinder Deadbolt in the Deadbolts department at Lowes.com
Weslock 600 Series Double Cylinder Deadbolt
Single VS. Double Cylinder Deadbolts: Which to Choose?