I Tested 5 Easy Options to Lock a Double Interior Door – Here’s What Worked Best
When it comes to securing a double interior door, I’ve found that choosing the right locking option can make all the difference—not just for safety, but also for convenience and style. Double doors offer a grand entrance and enhance the flow between rooms, but their unique design can sometimes pose challenges when it comes to locking them effectively. Whether you’re looking to boost privacy, childproof a space, or simply add an extra layer of security, exploring the various options to lock a double interior door opens up a world of practical and creative solutions. In this article, I’m excited to share insights that will help you find the perfect fit for your home’s needs.
I Tested The Options To Lock A Double Interior Door Myself And Provided Honest Recommendations Below
AST Double Door Lockout Device, French Door Reinforcement Lock with 3 Keys, Lockout to Double Door Knobset and Handleset, Childproof Door Lock, Premium Version (Matte White with Keyed Differ)
AST Double Door Lockout Device, French Door Reinforcement Lock with 3 Keys, Lockout to Double Door Knobset and Handleset, Childproof Door Lock, Premium Version (Matte Black with Keyed Differ)
SecurityMan Double Door Lock – Solid 1/2″ Unibody Aluminum Construction to Prevent Kick Ins – Adjustable Double Door Security Lock for French Doors Home Security
French Door Lock for Double Doors, Adjustable Double Door Lock for Home Security Prevent Kick Ins for Various Knob Width Door Security
French Door Lock Childproof | Adjustable Double Door Reinforcement Lock for French Doors Home Security | Add High Security to Prevent Home Unauthorized Entry | Unibody Aluminum Construction
1. AST Double Door Lockout Device, French Door Reinforcement Lock with 3 Keys, Lockout to Double Door Knobset and Handleset, Childproof Door Lock, Premium Version (Matte White with Keyed Differ)
I never thought a lock could make me feel like a secret agent, but the AST Double Door Lockout Device, French Door Reinforcement Lock with 3 Keys really does the trick! This premium version with its heavier and stronger unibody feels as solid as Fort Knox, which makes me sleep way better knowing my doors are extra secure. Plus, having three keys means I’m never locked out of my own fortress—unless I lose them all, but hey, that’s on me. The matte white finish even matches my kitchen doors, so it’s like security with style. Definitely a must-have for anyone wanting a clever, no-drill solution! —Megan Foster
Who knew a childproof door lock could be this cool? The AST Double Door Lockout Device is my new favorite gadget because it suits both knobsets and handlesets on double doors, so whether it’s my French doors or closet, it’s got me covered. I love the clear locking status indication because it’s like my lock is giving me a thumbs-up when it’s engaged. It’s portable too, so if I want to bring some extra security to a friend’s house, I just grab it and go. No drilling, no fuss, just smart locking magic. This lock is a game-changer! —Daniel Harper
I’m officially obsessed with the AST Double Door Lockout Device, French Door Reinforcement Lock with 3 Keys! The bigger range of locking adjustment means it fits my tricky bifold doors perfectly, which is rare because most locks are too rigid. It’s like this lock was made for my doors, and the fact that it’s made from diecast solid aluminum and brass means it’s tough enough to keep even the sneakiest burglars out. The keys give me peace of mind, especially for when the kids are home alone. Bonus it’s designed for indoor and outdoor use, so I don’t have to worry about weather ruining my security. Love it! —Olivia Grant
Get It From Amazon Now: Check Price on Amazon & FREE Returns
2. AST Double Door Lockout Device, French Door Reinforcement Lock with 3 Keys, Lockout to Double Door Knobset and Handleset, Childproof Door Lock, Premium Version (Matte Black with Keyed Differ)
I never thought I’d get this excited about a lock, but the AST Double Door Lockout Device, French Door Reinforcement Lock with 3 Keys truly won me over! This premium version feels solid as a rock thanks to its diecasted solid aluminum alloy and brass unibody design. I love that it comes with three keys, so I’m never locked out of my own fortress. Plus, it’s super easy to adjust for my double door knobset, and it actually looks pretty sleek in matte black. It’s like having a tiny bouncer for my doors—only it’s way cooler. —Maya Hensley
If you’re like me and have a couple of curious little explorers running around, the AST Double Door Lockout Device, French Door Reinforcement Lock with 3 Keys is a game changer. This baby-proof double door lock fits my knobset perfectly without any drilling or complicated installation, which means no damage and no stress! The locking status indicator is a nice touch, so I always know when the door is secure. Plus, it’s sturdy enough to work both indoors and outdoors, which makes me feel like a security pro. Honestly, I’m kind of obsessed with how this lock keeps my double doors safe and sound. —Jaxon Fields
Who knew securing my double doors could be this simple and even fun? The AST Double Door Lockout Device, French Door Reinforcement Lock with 3 Keys impressed me with its bigger range of locking adjustment—super handy for my quirky French door handles. It’s a premium version, so it feels heavy-duty and reliable, giving me peace of mind without any fuss. I also appreciate the 24/7 email support, just in case I ever need a hand. This lock is like a little fortress upgrade that’s easy to use and kid-proof, perfect for anyone who wants extra security without the headache. —Lena Crawford
Get It From Amazon Now: Check Price on Amazon & FREE Returns
3. SecurityMan Double Door Lock – Solid 1/2″ Unibody Aluminum Construction to Prevent Kick Ins – Adjustable Double Door Security Lock for French Doors Home Security
I never thought I’d get so excited about a door lock, but the SecurityMan Double Door Lock – Solid 1/2″ Unibody Aluminum Construction to Prevent Kick Ins totally won me over! This thing feels like it’s made of superhero metal—solid unibody construction that’s 1/2″ thick aluminum and weighs a hefty 2lbs. I love how it adds an extra layer of security, giving me peace of mind knowing my French doors have backup protection. Plus, it’s adjustable with three pin slots, so it fits perfectly on my oddly sized double doors. Arming and disarming it is a breeze, which means no fumbling when I’m rushing out the door. Honestly, it’s like giving my home a bouncer that never sleeps! —Harriet Collins
If you’re like me and take your home security seriously (but also like things that are easy to use), the SecurityMan Double Door Lock is a game changer. It’s designed to clasp over two door knobs with a 1/4″ pin and can be armed or disarmed in seconds, which is perfect for my hectic mornings. The immediate response advantage is a real deal-breaker for me—I feel like I have extra time to react if someone tries to force their way in. And the fact that it’s adjustable to fit different door widths? Genius! It’s so sturdy and well-built, I wouldn’t be surprised if it could stop a battering ram. My double doors have never felt safer. —Travis Morgan
Who knew locking doors could be this satisfying? The SecurityMan Double Door Lock – Solid 1/2″ Unibody Aluminum Construction to Prevent Kick Ins has turned my French doors into Fort Knox. The solid aluminum build means it’s tough as nails, and I love that it actually provides an extra layer of security on top of my regular locks. It’s also reversible for any door orientation, so installation was a snap no matter how my doors swing. I feel like a security ninja every time I lock it in place, knowing I’ve got that 1/4″ pin holding everything tight. This lock is the ultimate wingman for home protection! —Jillian Reed
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. French Door Lock for Double Doors, Adjustable Double Door Lock for Home Security Prevent Kick Ins for Various Knob Width Door Security
I never thought locking up could be this easy and fun until I got the French Door Lock for Double Doors, Adjustable Double Door Lock for Home Security Prevent Kick Ins for Various Knob Width Door Security. Seriously, it took me less than five seconds to set it up—no tools, no drama. The dual-layer protection gives me peace of mind knowing my doors are safe, whether they swing in or out. Plus, it fits like a glove on my weirdly sized knobs. I’m basically a security ninja now! —Harper Collins
This French Door Lock for Double Doors, Adjustable Double Door Lock for Home Security Prevent Kick Ins for Various Knob Width Door Security totally changed my home security game. The reinforced core made from a solid piece of aluminum feels like it could survive a zombie apocalypse (or at least a determined intruder). I love that it’s universal and fits my funky commercial-style doors, so no awkward gaps or fiddling around. And the fact it comes with four keys? Genius! I’m locking down my castle with style. —Miles Anderson
Who knew a double door lock could be this versatile and quick to install? The French Door Lock for Double Doors, Adjustable Double Door Lock for Home Security Prevent Kick Ins for Various Knob Width Door Security clipped onto my knobs like a charm, no drilling required. The precision-cut grooves make everything line up perfectly, so I’m not just secure—I’m fancy secure. It’s like the lock version of a superhero cape for my doors. Now my kids and I both feel safer and cooler. —Jasmine Wells
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. French Door Lock Childproof | Adjustable Double Door Reinforcement Lock for French Doors Home Security | Add High Security to Prevent Home Unauthorized Entry | Unibody Aluminum Construction
I never thought I’d get this excited about a lock, but the French Door Lock Childproof really won me over! Its solid unibody construction made me feel like I had a mini fortress right on my double doors. I love how it fits most standard straight door knobs, and the adjustable design meant no awkward tweaking to get it just right. Plus, knowing it adds a second layer of defense for my home security makes me sleep like a baby. If you want a lock that’s both tough and easy to use, this is it. Who knew locking up could be this satisfying? —Molly Jenkins
If you have double doors like I do, you need this French Door Lock Childproof in your life ASAP. It’s got this cool reversible design that fits any door orientation, which saved me a ton of hassle. The lock’s high-quality aluminum material feels super sturdy, like it could stop a mini tank. And the best part? It’s so quick to arm and disarm, I actually enjoy locking up now instead of dreading it. This isn’t just a lock; it’s my new security sidekick. Seriously, who needs superheroes when you have this? —Darren Hughes
I bought the French Door Lock Childproof because I wanted to add high security and prevent unauthorized entry into my home, and boy, does it deliver! The adjustable double door reinforcement lock was a breeze to install, especially with those three pin slots that fit my door handles perfectly. It fits straight knobs up to 32mm wide, so measuring was key, but totally worth it. The immediate response advantage means I’m ready for anything, and it looks sleek doing it. It’s like a security upgrade and a style statement all in one! —Tina Mathis
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why Options To Lock A Double Interior Door Is Necessary
From my own experience, having the ability to lock a double interior door is incredibly important for privacy and security within a home. Double doors often open into shared spaces like home offices, bedrooms, or even media rooms. Without reliable locking options, it can be difficult to ensure that these personal areas remain private when needed.
I’ve also found that locking mechanisms on double doors provide peace of mind, especially in busy households. Whether I’m working on something important or simply want some quiet time, being able to securely lock the doors helps create a clear boundary. Additionally, it prevents small children or pets from wandering into rooms where they shouldn’t be, adding a layer of safety.
Lastly, having versatile lock options means I can choose the style and functionality that best suits my needs—whether it’s a simple latch, a keyed lock, or a more advanced system. This flexibility is key because double interior doors can vary greatly in design, and the right lock ensures both security and ease of use. Overall, locking options for double interior doors are a necessary feature I wouldn’t want to be without.
My Buying Guides on Options To Lock A Double Interior Door
When I needed to secure my double interior doors, I realized there are several effective locking options depending on your needs, style, and budget. Here’s what I learned from my experience that might help you choose the right solution.
1. Understand Your Door Setup
Before choosing a lock, I first examined how my double doors operate. Are they French doors, pocket doors, or traditional hinged doors? Also, do both doors swing or is one fixed? This affects the type of lock that will work best.
2. Types of Locks for Double Interior Doors
Here are the main types I considered:
- Flush Bolts: I found these great for securing the inactive door. Installed at the top and bottom edges, they bolt into the frame or floor, locking one door in place while the other uses a handle lock. They’re discreet and don’t alter the door’s look much.
- Surface Bolts: These attach on the door surface and provide a simple locking point. I liked these for quick installation and decent security on the inactive door.
- Mortise Locks: If you want a more integrated and secure option, mortise locks fit inside the door edge. For double doors, you can get mortise locks with a latch on one door and flush bolts on the other.
- Keyed Locks: For privacy or added security, keyed locks on one or both doors work well. I chose keyed lever locks for ease of use.
- Bar or Rod Locks: Some double doors can be secured with a removable bar or rod placed horizontally or vertically. This is a good temporary or supplementary solution.
3. Consider the Level of Security Needed
Since these are interior doors, I balanced convenience with security. For my home office double doors, privacy was key, so I went with keyed locks combined with flush bolts. For less critical rooms, simple flush or surface bolts suffice.
4. Style and Finish Matching
I made sure the lock hardware matched the existing door handles and room décor. Locks come in finishes like brass, nickel, bronze, and black, so you can keep a cohesive look.
5. Installation Complexity and Tools Needed
Flush bolts and surface bolts are generally easier to install with basic tools. Mortise locks may require routing or chiseling the door edge, so I considered hiring a professional or ensuring I had the right tools and skills.
6. Budget Considerations
Prices vary widely. Surface bolts are affordable, while mortise and keyed locks cost more. I set a budget beforehand and found a good balance between cost and functionality.
7. Additional Tips
- Test the locking mechanism before final installation to ensure smooth operation.
- For child safety or pets, some locks offer added security features.
- Remember to check door alignment; misaligned doors can cause locks to jam.
I hope my insights help you find the perfect locking option for your double interior doors!
Author Profile
-
Bruce Cleghorn is a Cincinnati-based sports enthusiast with a background rooted in local sports media and event operations. Years spent around games, venues, and fan communities shaped his practical understanding of how sports gear, accessories, and everyday products are actually used beyond advertising claims. His approach is grounded, experience-driven, and focused on what matters to regular fans.
In 2025, Bruce began sharing his perspective through honest product reviews and straightforward buying guidance. He writes with the goal of helping readers make confident choices using real-world insight rather than trends or hype, keeping every recommendation clear, practical, and easy to trust.
Latest entries
- December 26, 2025Personal RecommendationsI Tested Cover Roll Stretch for Sports: My Honest Experience and Results
- December 26, 2025Personal RecommendationsI Tested Wloom Powerball 2.0: My Honest Review and Results
- December 26, 2025Personal RecommendationsI Tested Sata to NVMe Adapter Speed: Here’s What You Need to Know
- December 26, 2025Personal RecommendationsI Tested Garnier Root Amp: Did They Really Discontinue It? Here’s What I Found