What Is a Double Key Deadlock?

Is adding a double-cylinder deadbolt to an exterior door a good idea? Find out about the pros and cons of adding double-keyed deadbolts vs. single-keyed deadbolts to exterior doors for safety and security. Deadbolts with two keys pose unique challenges.

Is It Possible to Install a Double-Sided Deadbolt In A House? - Realty Times

Gatehouse And Iron Gate Interlocking Double Key Deadlock

Double Cylinder Deadbolts at

High Security Aluminum Deadbolt Gate Locks with cross star keys

doors - How do I remove this Schlage double-cylinder deadbolt with no visible screws? - Home Improvement Stack Exchange

Satin Nickel Key Control Deadbolt - Keyed One Side - featuring SmartKey

Replace a double keyed deadbolt without screws

How to remove double key deadbolt with no visible screws DIY video #deadbolt #key #remove

LOCK & KEY S205 DOUBLE CYLINDER DEADLOCK SATIN CHROME

LOCKWOOD L001-1K1SPDP DOUBLE KEYED DEADLOCK SATIN PEARL

Getting Smart With: Deadbolts - Beacon

BRINKS. Double Cylinder Keyed Deadbolt Lock, Satin Nickel - Pick, Bump and Drill Resistant and Comes with an Anti-Pry Shield - Doorknobs

BiLock Grade 1 Double Cylinder Deadbolt :: Deadbolts :: Door Locks :: Security Snobs

Features: Probrico keyed entry deadbolt with key on both side, the locks are keyed alike function, all deadbolts have the same key; Material

Satin Nickel Finish Double Cylinder Deadbolt Lock - Keyed Alike DLD102SN