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.

Satin Nickel 985 Deadbolt - Keyed Both Sides - featuring SmartKey

* 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

Why are double keyed deadbolts a defect? - Nonprofit Home Inspections

Double keyed Deadbolt Lock - Keyed on Both Sides, 2-Way Adjustable Cylinder Deadbolt (Privacy/Passage), Satin Stainless Steel(Black, Double Side)

Medeco 11-0202-05-00 Bright Brass, Double Cylinder Tubular Deadlock Deadbolt Key On Both Sides 2-3/4 Backset, 00 Keyway HIGH SECURITY

What Is a Double-Cylinder Door Lock?

Replace a double keyed deadbolt without screws

LOCKWOOD L001-1K1SPDP DOUBLE KEYED DEADLOCK SATIN PEARL

What Is a Double Key Deadlock?

Premier Lock Bronze Lacquer High Security Double Cylinder Jimmy Proof Die Cast Deadbolt Lock with Flat Strike and 2 KW1 Keys JP022F - The Home Depot

Brinks Keyed Entry Satin Nickel Single Cylinder Deadbolt

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

Gatehouse And Iron Gate Interlocking Double Key Deadlock

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)