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.

Abloy Protec2 Double Cylinder Deadbolt :: Deadbolts :: Door Locks :: Security Snobs

Double vs Single Cylinder Deadbolt: What Are the Differences

Brinks Keyed Entry Satin Nickel Single Cylinder Deadbolt

Schlage BR262 Double Cylinder Deadlock KA3 Antique Brass 3 PACK – AnnesHardwareSurplus

Can I replace double key deadbolt with key/thumb turn while keeping same key? : r/Locksmith

Hager Grade 1 Deadlock Double Cylinder Satin Chrome 2-3/4 BS Standard Strike - 3114-234-US26D-NC-KD-3930

High Security Aluminum Deadbolt Gate Locks with cross star keys

ProSource 6224331-3L ToolBasix Jimmy Proof Double Cylinder Deadlock With Shutter Guard Golden Finish: Deadlock & Deadbolt Outlet (045734988873-3)

Replacing double-keyed deadbolt with turn lever : r/Locksmith

Choose 31/32 or 1-1/8 Backset Backset: The distance between the edge of the door and Center of the key cylinder. Huge five-ply laminated steel bolt

Pacific Doorware AR Rite Style Door Lock Mortise Deadbolt & Double Keyed Cylinder Set, in Duronotic (1-1/8 Backset)

How To Replace A Deadbolt Keylock

Double Cylinder Deadbolt

Replacing double-keyed deadbolt with turn lever : r/Locksmith