Best Double Cylinder Deadbolts of 2026
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Double cylinder deadbolts are a popular choice for homeowners looking to enhance their home security. These deadbolts feature a keyhole on both sides of the lock, requiring a key to unlock or lock the door from both the inside and outside. This added layer of security ensures that even if an intruder gains access to the inside of the house, they will not be able to simply unlock the door and exit. Double cylinder deadbolts are ideal for doors with glass panels, as they prevent burglars from breaking the glass and reaching in to unlock the door.
At a Glance: Our Top Picks
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Top 5 Double Cylinder Deadbolts
Rulart Double Keyed Deadbolt Lock
The Rulart Double Keyed Deadbolt Lock is a high-security lock designed to provide excellent function and extra security for your doors. It features a unique key for each lock, ensuring that multiple locks cannot be opened. The solid copper cylinder keyhole and solid steel latch offer anti-pry and anti-collision functions, making it suitable for doors that require keys for entry and privacy protection. The lock also has an adjustable backset, making it compatible with a variety of door thicknesses. Installation is quick and easy, requiring only a screwdriver. With the Rulart Double Keyed Deadbolt Lock, you can have peace of mind knowing that your doors are securely locked.
Prime-Line U 9970 Deadlock Brass Finish
The Prime-Line Deadlock U 9970 offers strong protection with its jimmy-resistant design, helping prevent forced entry by stopping door frames from spreading. This feature gives you extra peace of mind by securing your door tightly to its frame. Installation is straightforward with clear instructions and a template, allowing you to mount the lock on wood or metal doors of various thicknesses quickly and easily. Made from durable diecast metal with a brass finish, this lock is built to last and keep your home safe from intruders. It also includes essential parts like an angled strike and tamper-resistant shutter guard to add more security and convenience to your setup.
Gobrico Keyed Alike Double Cylinder Deadbolt Locks
The Gobrico Double Cylinder Deadbolt Locks come in a satin nickel finish and are keyed on both sides, making them easy to lock and unlock from both inside and outside. They are easy to install on standard pre-drilled doors and come with six keys for the two bolts. The adjustable latch fits all standard doors, and it meets grade-3 residential security standards.
Storefront Door Mortise Lock Hook Deadbolt
The Storefront Door Mortise Lock Hook Deadbolt is a double cylinder lock set designed for storefront entry doors. The lock body features a straight bolt and mortise lock cylinder holes on each side. The five-ply laminated steel bolt with concealed hardened steel pin provides maximum security with a 360° turn of the key or thumb-turn to retract the bolt. This lock is applicable for storefront doors with thickness of 1.371.77 inch (3545mm). The package includes a deadbolt lock, faceplate, thumbturn, lock cylinder, and 3 keys.
SUMBIN Jimmy Proof Deadbolt Lock Black
The SUMBIN Deadbolt Lock offers a sturdy and reliable security solution for your home. Its single-cylinder design with zinc construction provides strong protection, giving you peace of mind against intruders. Installing this lock is straightforward and fast, with clear instructions included, and it fits a variety of door types and thicknesses, whether wood or metal. You can mount it on either the inside or outside, and on left or right doors, making it versatile for your needs. Built with a tamper-resistant design and a shutter-guard, this deadbolt enhances your entryway security, helping you feel safer whether you're away or at home with your family.
Frequently Asked Questions (FAQs)
1. Are double cylinder deadbolts legal?
Double cylinder deadbolts are legal in some locations, as they are allowed by code. While they may seem to hinder egress since a key is required to unlock them from the inside, they are acceptable for specific applications.
2. Why would you want a double-cylinder deadbolt?
A double-cylinder deadbolt provides an extra layer of security. Since a key is required to unlock it from both the inside and outside, it deters burglars who find it more difficult to pick. This added security makes it less likely for intruders to target your property.
3. Are double cylinder deadbolts more secure?
While double-cylinder deadbolts offer extra security, they do have some downsides. Generally, single-cylinder deadbolts are less secure than double-cylinder options. Intruders who are knowledgeable about these locks may find it easier to gain access to a home with a single-cylinder deadbolt.
4. Can burglars break deadbolts?
Certain types of deadbolts, especially those made from soft metals, may be vulnerable to burglars. These locks can be sawed through with relatively little effort. It's important to choose high-quality deadbolts made from sturdy materials to enhance their effectiveness and deter burglars.
During our double cylinder deadbolt research, we found 24 double cylinder deadbolt products and shortlisted 5 quality products. We collected and analyzed 51,926 customer reviews through our big data system to write the double cylinder deadbolts list. We found that most customers choose double cylinder deadbolts with an average price of $18.49.
The double cylinder deadbolts are available for purchase. We have researched hundreds of brands and picked the top brands of double cylinder deadbolts, including Rulart, Gobrico, Casmer, SUMBIN. The seller of top 1 product has received honest feedback from 38 consumers with an average rating of 4.5.
Harry Stack owns a small hardware store, his career landed him a depth of knowledge in categories such as tools, equipment, machinery and hardware. In his spare time, he usually repairs furniture, safes and appliances, and he knows how to make simple repairs to plumbing or electrical fixtures. His hobbies also include woodworking and fishing.