If you need extra security with key access from both sides, a double cylinder deadbolt is a practical choice. This guide highlights five solid options designed for exterior and interior doors, suitable for homes, apartments, or offices. The listed products offer a range of finishes, backsets, and cylinder types to match diverse door preps. Read on to compare which double-sided bolt lock best fits your door thickness, security needs, and installation preferences.
| Product | Finish / Type | Best For |
|---|---|---|
| Probrico Satin Nickel Double Cylinder Deadbolt | Satin Nickel | Exterior doors needing strong, keyed security on both sides |
| Gobrico Keyed Alike Double Cylinder Deadbolts | Satin Nickel | Homes that want a convenient shared key across two bolts |
| Probrico Keyed Alike Satin Nickel Double Cylinder | Satin Nickel | Interior/Exterior doors with uniform keying |
| Probrico 2 Pack Black Double Cylinder Deadbolt | Black | Budget-friendly twin locks for multiple doors |
| Forliggio All-new Deadbolt Door Lock Set | Black | ANSI/BHMA Grade 3 enhanced security for front doors |
Probrico Satin Nickel Double Cylinder Deadbolt
Double-cylinder design allows locking and unlocking from both sides with individual keys. This product is best for exterior doors requiring two-way access control. Features include ANSI Grade 3 durability and an adjustable backset for doors 1-3/8″ to 1-3/4″ thick, with backset options of 2-3/8″ or 2-3/4″. The finish is satin nickel, which blends with modern door hardware.
Who it’s best for: homeowners who want separate keys for each side while maintaining a standard door prep. Why selected: durable construction and flexible backset make it suitable for a range of door thicknesses. Limitation: some users may need to re-key if duplicating keys for multiple doors.
Gobrico Keyed Alike Double Cylinder Deadbolts
This pair provides keyed-alike entry by both sides, making it convenient to use a single key across two locks. It’s designed for exterior doors where dual-side locking is needed and includes 6 keys for the two bolts. The set is easy to install with a standard screwdriver and is compatible with common door preps. Best for: households needing consistent keying across multiple exterior doors. Better for: shared access in a multi-door setup. Caution: ensure door thickness and backset compatibility before purchase.
Probrico Keyed Alike Satin Nickel Double Cylinder
This single-pack double-cylinder lock is keyed on both sides, with a keyed-alike design that provides identical keys for convenient access. It includes an adjustable backset of 2-3/8″ or 2-3/4″ (60mm or 70mm) and supports doors 1-3/8″ to 1-3/4″ thick. Best for: interior/exterior doors where uniform keying across a single lock is sufficient. Choose this if you want a streamlined keying system without managing multiple separate keys.
Probrico 2 Pack Black Double Cylinder Deadbolt
Two black double-cylinder deadbolts come with a matching backset and mounting suitability for standard doors. Each lock operates with keys from both sides, offering dual-side security. Best for: budget-conscious buyers who want two identical double-cylinder locks for multiple doors. Better for: uniform appearance across doors with a modern black finish. Limitation: ensure the door thickness and backset match your existing preps for a proper fit.
Forliggio All-new Deadbolt Door Lock Set
Forliggio offers ANSI/BHMA Grade 3 enhanced security with a brass cylinder, noted for durability and weather performance. The lock targets exterior front doors and features adjustable backsets for versatile installation on doors 1-3/8″ to 2″ thick. Best for: front doors needing strong security and long-term reliability. Better for: environments requiring a brass cylinder for corrosion resistance. Caution: ensure compatibility with existing door prep and bore sizes before purchase.
Buying Guide
Key factors to consider when selecting a double-sided bolt lock:
- Door compatibility: check door thickness (commonly 1-3/8″ to 1-3/4″), backset options (2-3/8″ or 2-3/4″), and door handedness.
- Cylinder design: distinguish between double-cylinder (keys on both sides) and keyed-alike systems for convenience and security needs.
- Finish and hardware style: match with existing door hardware (Satin Nickel, Black, Brass, etc.) for cohesive aesthetics.
- Security level: ANSI/BHMA grades indicate durability. Grade 3 is common for residential use; higher grades offer more resistance to wear and forced entry.
- Installation: evaluate whether included mounting hardware fits pre-drilled doors and if professional installation is desired.
FAQ
- What is a double-cylinder deadbolt?
Answer: A lock that requires a key to operate from both the interior and exterior sides, providing two points of control for entry. - Are double-cylinder locks safer for all doors?
Answer: They offer enhanced security but may be less convenient for quick egress in emergencies; consider door location and accessibility needs. - Is a single pack enough for one door?
Answer: Yes, if you only need dual-side control for one door; a second lock can be used on additional doors if desired. - What is an adjustable backset?
Answer: A backset is the distance from the edge of the door to the center of the bore; adjustable backsets fit different door preps (2-3/8″ or 2-3/4″). - Do these locks require re-keying if lost keys are common?
Answer: Some models are keyed-alike across multiple units; if not, you may need to re-key or replace cylinders to match keys.