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.

ANSI/BHMA A156.5 Grade 2 certified, Double Cylinder, ANSI Function E0142, 2-3/8 to 2-3/4 Adjustable Backset

B562P Double Cylinder Deadbolt

Single and Double Cylinder Door Locks

EZSET 210 SERIES DOUBLE KEY DEADBOLT

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

* Easy to install * 25mm deadbolt * C4 keyway * 3 brass keys * Adjustable backset 60-70mm * Suitable for external doors

Buy Right Stainless Steel Double Cylinder Deadbolt

Key Deadbolt Lock Both Sides, Double Keyed Deadbolt Lock, Keyed on Both Sides, Jimmy Proof Deadbolt with Keys, Right-Handed Security Night Latch Lock, for Doors from 1-1/2'' to 2-1/5'', Dark Green

Abus Deadlock Double Cylinder Jimmy Proof 2 Keys Reversible Inside Outside Lock

Gatehouse And Iron Gate Interlocking Double Key Deadlock

Interlocking Deadlock, Master Kwikset Keyed, Jimmy Proof, 2125 – NU-SET

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

Deadbolt - iFixit

The 9 Best Deadbolts of 2023