Prime-Line U 11441 Door Reinforcement Lock – Add Extra, High Security to your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction, Red Bronze (Single Pack)

As a homeowner who prioritizes the safety and security of my family, the Defender Security U 10827 Door Reinforcement Lock has become an essential addition to my home, providing an extra layer of protection against unauthorized entry. The first thing that impresses me is the sturdy aluminum construction of this door reinforcement lock. It offers robust durability and strength, ensuring that my door is fortified against forced entry attempts. The 3-inch stop is a standout feature of the Defender Security U 10827 Lock. It effectively prevents the door from opening beyond a certain point, making it challenging for potential intruders to breach. One significant advantage of this door reinforcement lock is its easy installation. It fits most standard doors, and the installation process is straightforward, requiring only basic tools. The satin nickel finish adds an elegant touch to the lock, complementing my door's aesthetics while providing reliable security. In conclusion, the Defender Security U 10827 Door Reinforcement Lock is more than just a lock; it's a high-security solution for protecting my home and preventing unauthorized entry. With its aluminum construction, 3-inch stop, easy installation, and stylish satin nickel finish, this door reinforcement lock has become a critical component of my home security system. For homeowners seeking peace of mind and enhanced security, the Defender Security U 10827 Door Reinforcement Lock is a top-notch choice. Safeguard your home and loved ones with confidence, thanks to the Defender Security U 10827 Door Reinforcement Lock!

PROs: - withstands break-ins - withstands pressure from the other side of the door to break-in - secure installation on door - easy to install (follow step by step, have a drill & drill bit ready) - easy to take off & put on (lock/unlock) - more secure than slide chain lock for door CONs: - if you have difficulty grasping items, it won't be "super" easy for you to lock/unlock this device Comment: I have a great appreciation for purchasing this door lock b/c in our neighborhood; there are times during the night where some ppl who aren't mentally stable try to break into homes they think aren't occupied, & one night that happened to us. I'm so grateful that I bought this secondary lock b/c although our actual door lock (where you put in the key) is older & easy to penetrate using a "bump key" (yes, this exists), this secondary lock helped to keep our door securely locked even while we were asleep, not knowing someone was trying to break in. SO, if you're looking for a secondary lock to your door (front, back, going to the backyard, for a bedroom), I recommend you get this. Yes, I use this lock as well to serve as a lock for my bedroom, b/c you never know if someone can get in using the windows instead & also, I don't want to change my door knobs (I've tried, but then I'd have to pay more to get the parts, the right size, door, & etc.) So, YES I save more in buying this lock rather than having to replace an old complicated door & lock Hope this review helps you in determining whether to purchase this lock. Hope you have a good day.

Excellent cheap security product and install takes about 3 - 5 minutes. I purchased this to compliment the door armor kit and they both make my home very secure where external doors are a concern. Growing up we had a similar concept with a small metal square latch that secured the door as this product does. This is very simple but sturdy and mounts on the inside of the door jam where if someone attempts to penetrate the door there is no way the screws would come out or the wood would crack. To make this simple I suggest mounting the device on the door jam using the front hole and short screw. This way you can close the door and test to make sure the door clears and easily make adjustments by loosening the short screw and sliding the device forward or backward. You also want to make sure when this device is locked that its flush with the door so that if someone were to attempt to penetrate the door it would not move back and forth. Only one of them did not line up correctly the first time but with some adjustment it now fits perfectly. I installed 5 of these devices, three at one house and two at my other house. Overall I think this is a worthy product and an inexpensive way to slow down a would be home invasion to either discourage a thief or simply give you more time to "prepare". You can also successfully use it as a means to secure a "safe room" for your family to lock themselves in a designated room should a home invasion occur. But whatever you do never have these latched when you leave the house without a second means of entry or someone in the house. An example would be if you use your garage for exit and entry the door leading to your house is your main access to your home. If your garage door opener were to ever fail due to power outage or other reasons you need to have a second point of entry. If the other doors were secured with this product you would resort to breaking a window or some inconvenient way to access your home! Install is a snap and anyone can do this even those who are not handy persons.

Our children had reached the age where they can open child-lock doors, and after discovering my 2 year old daughter has an exploratory vibe and had gone downstairs into the basement unnoticed, I decided to try one of these door locks. Note that this is interior to the house, so it's not so much to prevent break-in, just control access. Note that it's important to always have an egress path from where they are installed in a locked position in case of emergency. I would prefer a different design that has egress options on both sides of a door if you're trying to train a child to stay in their bedroom. I went with this model because the finish matched the rubbed oil bronze finish of the door hinges and door knob. After installation, the door security lock fits nicely with the decor. The door security kit comes with short screws that go into the door jamb that provide less strength, and longer 3" screws that should anchor to the stud frame around doors. There is more potential for stripping the screws if you only use the short ones that go into the door frame instead to the jamb. This is because the short screws would only anchor to the door frame that is often a type of decorative molding that doesn't have the structural strength of 2x4" studs (it doesn't take much force to deform the material). I decided that even if installed indoors, I wanted the door lock to be secure so I decided to use the longer 3" screws. The installation was easy but not without incident. Note in the picture with the drill bit and screw side by side that they are about the same length. When you put the drill bit in the drill, you have to sacrifice some length because the shaft sits in the drill chuck. The common drill bit length that you get in a normal drill bit set will not pre-drill the entire length of the longer 3” screw. So I pre-drilled as much as the shaft would allow me to drill, and used the lowest setting on the impact driver to push the screw into the hole. I had less than 1/2" remaining and it would not progress any further on the impact driver’s lower settings. I didn't have a longer drill bit length so what did I decide to do? I cranked the impact driver to 3 and after about half the distance I snapped the screw head clean off. Kraggle! Now I had a headless screw that was majorly stuck and the remaining screw was only protruding about 1/4" from the door frame. To remedy this, I used IRWIN Visegrip Quick Adjusting GrooveLock 10-in Electrical V-jaw Pliers to pinch the small remaining exposed screw length and spent about 15 minutes de-threading the screw from the door jamb. I needed the longer pliers length to get the torque to unscrew the threads, but when the pliers are that big, I still ended up deforming the door frame molding a little bit. I went to Lowe's and looked for a DEWALT 1/8-in 6-in Black and Gold Coated Hss Twist Drill Bit. Lowe’s was out of stock, but they had a 12 inch length drill bit in stock so I just decided to go with that. I would have preferred the smaller drill bit length but the door opening width still gives enough room with the 12 inch long drill bit to pre-drill the holes straight on. To ensure I didn't over drill the screw length, I placed a wrap of painters tape at the length on the drill bit to mark the screw length so I'd have no risk of over committing the hole and drilling through drywall just a few inches beyond the door jamb. Once I pre-drilled the correct length, I was able to use the impact driver on the lowest setting to drive the screws all the way into the door frame and jamb. Note with philips head screws, try to use the "fattest" impact driver bit that will still fit in the screw head. It's the best way to help prevent deforming the screw head from the bit slipping. In the end I had to borrow one 3" screw from a second kit that I had bought, though I could have gotten away with using two 3" screws on top and bottom and one small screw in the middle. Hopefully you read this making the same mistake! To open the door, you just have to pull out away from the door frame and then rotate to open. To close, you can simply rotate it back and it will snap into place, or you can pull out a little bit and you won't get the small "snap". All in all, I'm very happy with the end result, as now we have control of access to the basement to keep our little ones safe (and help keep the wife sane). It's easy to use and the wife loves it, so it's a win-win. Highly recommend if you want something to fit the house decor even though some people may consider it a little bit overkill.

I read other people's reviews (great lock, except for the weak screws) so I ordered two of these for our new home's front door and the garage-side door. And I was hoping the 3-4 star reviews were wrong and I will be able to pull off a successful install. WRONG! Just like many others have said, the very first screw broke off. And after an hour and half ordeal and a broken off screw that I could not pull out, here's what I learned. Hope this helps future buyers and installers. FIRST, THE LOCK ITSELF...the lock is solid and polished nicely (just like the pictures). We got the satin nickel finish and it matches pretty well with our already installed hardwares. I would highly recommend it. (I ordered the "Defender Security" brand, formerly known as "Prime-Line," after contemplating whether I should get the cheaper versions but the other brands had some hard to pronounce names that threw me off and this is sold directly by Amazon. SECOND, THE INSTALL...this is where things went wrong. The provided instructions are straight forward and install was easy, THAT IS UNTIL THE TIP OF THE SCREW BROKE OFF/FLEW OFF. And from my experience, it could have been a lot worse of a problem, because THE BROKEN SCREW WILL NOT COME OFF as you can see in the picture. HERE'S THE PROBLEM. The standard 1/8 drill bit that they tell you to use is about 2 1/2 inches long hence it will not drill the whole length of the provided 3 inch long screw (the lock comes with three 3 inch long screws and four 1/2 inch pilot screws...not sure why they give you four). So my first screw which broke at the tip got stuck in the hardwood stud two-thirds way in. I should have listened to the reviewers, but I took a chance with the impact driver and it snapped at the very first attempt of trying to drive it in. And since it was two inches in already, the plier can't get it out. It will just shred the thred of the screw. They should have mentioned the fact that you need to use an extra long 1/8 drill bit because you are not going to drive those screws in without breaking them. THIRD...HERE'S HOW I FIXED MINE AND SUGGESTIONS FOR FUTURE BUYERS/INSTALLERS HOW I FIXED MINE I could have spent another $10 bucks for a stronger screws that can withstand an impact driver, but I found some #8 2 inch screws and decided to use them instead. And it worked out for us. And I was able to put in another 2 inch screw into the stud where the pilot screw is supposed to go so it was a solid install. I am sure the lock will probably now withstand only about 500-600 lbs of pressure instead of the promised "up to 800 lbs" but it feels solid. and the door is not budging. The lock opens and closes fine and feels very solid when it's closed and there's no smudges of any kind with the black plastic rubber guard. HERE'S MY SUGGESTIONS FOR A FUTURE CORRECT INSTALL (1) DO NOT USE AN IMPACT DRIVER ON THE SUPPLIED SCREWS!!! TRUST THE REVIEWS, THE SCREWS WILL BREAK AND YOU WILL REGRET IT. I could not get the broken screw out even with a torque plier and ended up nibbling and hammering it in so it doesn't stick out. (2) TO INSTALL WITH 3 INCH SCREWS (as recommended by the manufacturer), you will either need to have/buy stronger screws or have/buy at least 3.5 inches long 1/8 drill bit (standard length bit will not work). (3) COMPROMISED SOLUTION...If you don't want to fork over the extra money for stronger screws or extra long 1/8 drill bit (at least 3.5 inches long), I think 2 inch screws or 2.5 inch screws will do more than an adequate job of securing the lock PROVIDED THAT you hit the stud at least an inch into drilling. I am assuming most people will have #8 screws of varying lengths lying around at home and for my install, I was able to reinforce it further by using a 2 inch screw in place of the 1/2 inch pilot screw. (4) Btw, make sure you have about 1/8 inch gap to avoid having to chisel (if you are particular about aesthetics like I do) As many reviewers have said, other than the ordeal with the weak screws, I still recommend the lock. HOPE THIS HELPS!!!

These are EXCELLENT. I have three for all my exterior doors. I also bought two for my girlfriend. One Defender is installed on her bedroom door, and one for her walk-in closet, with solid-core doors, to create a two-layer set of security barriers that she can easily use to retreat & stay safe if needed. She locks the bedroom door at night, and NObody is coming through without giving her plenty of time to react. These are very well built, will hold a door with complete security, and are easy to operate. Installation was easy and fast -- even for doors with curved molding. When locked, anybody trying to break in will have to literally destroy the door to get through. If you are particularly concerned, you could instal more than one -- e.g. one above and one below the existing door knob and dead bolt. Defender locks would still be effective with an interior, hollow-core door, but the door would eventually give way. The security screws are very long, and the size of the plate on the frame spreads out any force over a larger area than a simple latch or dead-bolt. A regular latch & plate can be kicked out. Using the Defender lock with a solid-core door makes your door totally un-openable unless you release it. It would still be effective with an interior, hollow-core door, but the door would eventually give way. The design is sleek, and low-profile, so it's not some giant fixture stuck on your wall. Last, if you ever decide to move, you can simply unscrew it and take it with you. The holes can be quickly filled with a colored wood putty and it's like it was never there. I highly recommend this product for anybody wanting to add a layer of extra security to any door.

This is a good looking, very sturdy metal door-stopping lock that works well and is available at a good price. The video provided on the product listing was a helpful, step by step tutorial, and made it easy for me to set up, once I found my drill and the appropriate bits. One thing I will say is if you have a tight fitting door, you may need to chisel away some of the molding to get the lock into the narrow space between the door and the frame. I didn’t have to, thankfully, and the door closes easily with it on, but keep that in mind. The metal material is thick, and after locking it, I was unable to open the door, no matter how hard I tried, which is a nice sense of security to have. It also looks nicer than the ball-and-chain type locks you see in hotels, which I was considering getting until I decided on this one. I’m about to get another one for my garage door as well. Very satisfied!

I cannot praise this lock enough. Quick summary of all its advantages: + This lock can be installed, even if your frame/mold is not flush with your door, which is the case in my house. It took me forever to find a lock that was suitable for this situation. + If you get SPAX screws and you have a wooden door frame, you do not need a drill to install this lock. You can just screw it right in. That is what I did and it was easy. + in general, this is very easy to install and does not take long. Although, if your frame/mold is not flush with your door, it is a bit tricky to get it positioned right. Perhaps stick it to the frame with double sided tape, close the door, and see if it easily closes; then mark the position of the holes with a pen. + It looks good + Super easy to open and close + If you use 3" screws, they go past the frame into the wall, which means that people won't be able to kick in the door by kicking against the frame + I don't see how this lock could be opened from the outside, it seems very secure. I feel so much better knowing that, even if my main lock gets picked, this one will still keep the door shut. Things to be aware of: + You cannot open the door at all when this lock is closed. If you want to open the door even just a little, you have to open the lock. That is exactly what I wanted but I know others want a lock where they can leave it locked and still open the door. + There needs to be a little bit of space between your door and the frame. Otherwise, the lock will not fit in between.

Perfect for securing your door. 100% great idea

This locking device is easy to install and provides additional security.

This is the second Defender Door Blocker we bought,very strong ,virtually impossible to break open the lock from outside,easy to install,screws comes along with the pack.As this gives additional security for the door,its highly recommended,moreover there is no need to drill any holes on the door for installing this blocker as this is fitted to the door frame.Very good product.

Sencillo, efectivo, facil instalacion. Muy recomendado!

Muy practico