What Is a Double-Cylinder Door Lock?

A double-cylinder door lock is a type of security device primarily found on residential doors. Homeowners often use these locks in conjunction with other types of security products, such as lever locks or handlesets. They can also be used as the primary locking mechanism on patio or balcony doors.

Double Cylinder / Deadbolt / V1801

Schlage B562 Double Cylinder Deadbolt

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

What Is a Double-Cylinder Door Lock?

Product Features: The deadbolt operated by key on both outside and inside; Material: Stainless Steel + Iron; Adjustable Backset - 2-3/8 inch or 2-3/4

Double Cylinder Deadbolts with Key on Both Side, Keyed Entry Door Lock Oil Rubbed Bronze Finish DLD102ORB

484 26D Sargent Deadlock Double Cylinder Deadbolt, 2-3/4 Backset, Satin Chrome Finish: 626/US26D Series: Sargent Auxiliary Locks Type: Locks,

Sargent 484 26D Double Cylinder Deadbolt 2-3/4 Backset Satin Chrome

MUL-T-LOCK ONLINE » MUL-T-LOCK MT5+ Double Cylinder Gate Latch Lock

Premium Double Cylinder Deadbolt Lock Stainless Steel SC1/KW1

Schlage Door Hardware - Double Cylinder Deadbolts, Door Locks

Arrow DBX62 Deadbolt, Double Cylinder

Double Cylinder Deadbolt Arrow

Double Cylinder Maximum Security Grade 1 Deadbolt Schlage B62

TOLEDO Door Handle with Double Cylinder Satin Nickel Deadbolt CV1501BAUS15 - The Home Depot

Double Cylinder Door Locks Manufactured with Automatic Production Lines - China Cylinder Lock, Cylinder Door Lock