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.

Mul-T-Lock High Security Double Cylinder Deadbolt Grade 1 – Reed Brothers Security Online Store

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

What Is a Double-Cylinder Door Lock?

Bronze Cal-Royal Barrington Institution Knob

Deadbolt Door Lock Double Cylinder with 2 KW1 Keys, Provides the highest level of residential security and features keyed on both sides.

Deadbolt Door Lock Double Cylinder with 2 KW1 Keys Stainless Steel Carded – Wholesale Price

CES High Security Double Cylinder Door Lock - REVERSIBLE - Made in Ger – Hartmann Tresore Online Shop

Holmes Building Materials

General Lock Double Cylinder Deadlock, US3 Polished Brass Finish, 6-Way Adjustable Latch, Schlage C Keyway, Grade 2

Schlage B662P Double Cylinder Deadbolt Lock Grade 1

All keyed same- Nickel door lock and double cylinder deadbolt, if you buy multiset(12 sets at most), they will have the same keys. The locks and

Complete Entry Lever Set with Double Cylinder Deadbolt

Designers Impressions Polished Chrome Double Cylinder Deadbolt: 88-2222 - Discount Home Furnishings, Inc.