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.

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

The 9 Best Deadbolts of 2023

Removing a double keyed deadbolt without screws

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Kwikset Deadlock Double Cylinder Lock With 2 Keys 665 RCL-RCS4 US3 Polish Brass.

Kwikset Deadlock Double Cylinder Lock With 2 Keys 665 RCL-RCS4 US3 Polish Brass

What Is a Double-Cylinder Door Lock?

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

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What Is a Double-Cylinder Door Lock?

Schlage BR262 Double Cylinder Deadlock KA4 Polished Brass 4 PACK – AnnesHardwareSurplus