---
product_id: 281703615
title: "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)"
brand: "prime-line"
price: "฿2057"
currency: THB
in_stock: true
reviews_count: 13
category: "Prime Line"
url: https://www.desertcart.co.th/products/281703615-prime-line-u-11441-door-reinforcement-lock-add-extra-high
store_origin: TH
region: Thailand
---

# 3-inch hardened screws included Tamper-resistant spring-loaded design 800 lbs force resistance 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)

**Brand:** prime-line
**Price:** ฿2057
**Availability:** ✅ In Stock

## Summary

> 🔐 Lock in your peace of mind — because your home deserves the best defense!

## Quick Answers

- **What is this?** 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) by prime-line
- **How much does it cost?** ฿2057 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/281703615-prime-line-u-11441-door-reinforcement-lock-add-extra-high)

## Best For

- prime-line enthusiasts

## Why This Product

- Trusted prime-line brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Unmatched Strength:** Engineered to withstand up to 800 lbs of force, this lock is your home's first line of defense against forced entry.
- • **Child-Safe Security:** Install higher on the door to keep little hands safe while maintaining maximum protection.
- • **Sleek & Durable Design:** Crafted from anodized aluminum with a stylish red bronze finish that complements modern home aesthetics.
- • **Effortless Installation:** Comes with 3-inch hardened screws and a clear how-to video, so you can secure your door in minutes without hassle.
- • **Tamper-Proof Peace of Mind:** Spring-loaded, tamper-resistant mechanism guards against lock picking, bumping, and forced kicks.

## Overview

The Prime-Line U 11441 Door Reinforcement Lock is a robust, aluminum rim lock designed to enhance home security by resisting up to 800 lbs of force. Featuring a tamper-resistant, spring-loaded design and a stylish red bronze finish, it installs easily on any swing-in door with included 3-inch hardened screws. Child-safe and built to prevent unauthorized entry, this lock offers a cost-effective, high-impact solution for modern homeowners seeking reliable protection.

## Description

Add an extra layer of security to your home with this Defender Security Door Reinforcement Lock. Designed to withstand 800 lbs. of force, you can rest easy knowing your family is safe and protected! This reinforcement lock has a spring-loaded design, aluminum construction and a red bronze anodized finish. This reinforcement lock can be quickly and easily installed on any swing-in door of any thickness, and can help ensure the door cannot be opened from the outside by being kicked inch Additionally, it’s tamper-resistant, so it can protect against lock picking and bumping. Plus, it’s child-safe, because you can install it higher on a door, where your young ones can’t reach. Length is 2 to 0.19 inch. Width is 1 to 0.38 inch. Installation takes minutes, and the U 11441 door reinforcement lock comes with 3 inch hardened screws. Extra home security and peace of mind are well within reach, and doesn’t have to come with the high price tag of an alarm system! Be sure to view the manufacturer’s How-To Installation Video also linked to this page, in the upper left-hand corner.

Review: High quality lock that is easy to install - 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!
Review: Great Lock For Added Protection - I live in a neighborhood where home invasions are frequent so i needed to think about what am i going to do to keep my family safe. I am a security conscious person. The first thing i think about is security in any situation i am in. This reinforced door lock is not only a simple device it's easy to install. I've seen a lot of people put this lock on the top part of their door and I can tell you putting it on top doesn't offer much security if an intruder tries to kick down your door. The middle of the door is the center of where force is met when someone kicks in your door. If you put this lock on top of your door the pressure from the blows to the door will put more pressure to the top area and snap the bottom portion of your door. The force of the blow is in the middle and that's where the lock should be to take the blows. How do i know? because I experimented on two doors using this lock. I placed one on top of my door were I see people putting it and i put one in the middle of the door. I found that the lock adsorbed the blows when the reinforced lock was put in the middle. We kicked the door down as hard as we could, we hit it with a sludge hammer, and also used a crow bar and it did not budge. When we put the lock on top we found that the door frame broke off and the door snapped because the pressure of the kicks and sludge hammer had snapped the door in half breaking the bottom part of the door. It all has to do with physics. This lock is well constructed and easy to open and close. I will say this. It's good to oil up the lock hinge from time to time to avoid friction which will occur over time. Also use concrete screws when drilling these onto the door frame. The screws that come with this are cheap and will break off if anyone dares to kick your door down. Overall this is an easy to install lock and well worth the money. I feel safe at night knowing nobody can break down my door even if they tried. This if placed right will withstand 500 and more lbs of pressure. SIDE NOTE: For extra added protection you should combine this with a metal door strike plate (as seen in photo). This makes it harder for people to break down your door and reinforces your door frame. Overall great solid buy and a must have to secure your home.

## Features

- KEEP YOUR HOME SAFE – Designed to withstand 800 lbs. of force, this U 11441 red bronze finish door reinforcement lock helps to prevent doors from being kicked in, increasing your home security and keeping you and your family safe!
- EASY INSTALLATION – The included 3” hardened screws make installation a breeze – extra security and peace of mind can be achieved in just minutes. Watch the video on this page for installation tips and operating instructions.
- ADDITIONAL HOME SECURITY – Use this high security door reinforcement lock for additional home security on any swing-in door of any thickness. It helps to ensure any door cannot be opened from the outside.
- CHILD-SAFE AND TAMPER-RESISTANT – The spring-loaded design can be installed at a higher level, to ensure it is child-safe. Plus, while locked, this tamper-resistant door latch protects against the door being kicked in, lock picking and bumping.
- PRE-DRILLING – The included 3 inch security screws require holes to be pre-drilled with 1/8 inch drill bit. Do not use a drill driver with max torque setting to install the 3 inch screws as you can strip or break the heads. Some doors may require mortising.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08N6XNSSL |
| Additional Features | Tamper Resistant |
| Best Sellers Rank | #12,305 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #65 in Door Latches & Bolts |
| Brand | PRIME-LINE |
| Brand Name | PRIME-LINE |
| Color | Red Bronze |
| Control Method | Touch |
| Controller Type | Hand Control |
| Customer Reviews | 4.7 out of 5 stars 23,910 Reviews |
| Finish Types | Painted |
| Global Trade Identification Number | 00049793571007 |
| Included Components | Door blocker and fasteners |
| Item Dimensions | 1.38 x 2.44 x 3 inches |
| Item Type Name | Door Reinforcement Lock |
| Item dimensions L x W x H | 1.38 x 2.44 x 3 inches |
| Lock Type | Rim Lock |
| Manufacturer | Prime-Line Products |
| Manufacturer Part Number | U 11441 |
| Material | Aluminum |
| Material Type | Aluminum |
| Model Name | Door Reinforcement Lock |
| Model Number | U 11441 |
| Number of Pieces | 1 |
| Recommended Uses For Product | Home Security |
| Special Feature | Tamper Resistant |
| Style Name | Modern |
| UPC | 049793571007 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** PRIME-LINE
- **Item dimensions L x W x H:** 1.38 x 2.44 x 3 inches
- **Lock Type:** Rim Lock
- **Material:** Aluminum
- **Special Feature:** Tamper Resistant

## Images

![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) - Image 1](https://m.media-amazon.com/images/I/51u8Zf1C3VL.jpg)
![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) - Image 2](https://m.media-amazon.com/images/I/51awJ+9u0kL.jpg)
![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) - Image 3](https://m.media-amazon.com/images/I/61aO2RR0++L.jpg)
![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) - Image 4](https://m.media-amazon.com/images/I/71mhiefK0dL.jpg)
![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) - Image 5](https://m.media-amazon.com/images/I/615CXk4binL.jpg)

## Available Options

This product comes in different **Color, Number Of Items** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ High quality lock that is easy to install
*by S***H on June 1, 2024*

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!

### ⭐⭐⭐⭐⭐ Great Lock For Added Protection
*by B***N on July 29, 2020*

I live in a neighborhood where home invasions are frequent so i needed to think about what am i going to do to keep my family safe. I am a security conscious person. The first thing i think about is security in any situation i am in. This reinforced door lock is not only a simple device it's easy to install. I've seen a lot of people put this lock on the top part of their door and I can tell you putting it on top doesn't offer much security if an intruder tries to kick down your door. The middle of the door is the center of where force is met when someone kicks in your door. If you put this lock on top of your door the pressure from the blows to the door will put more pressure to the top area and snap the bottom portion of your door. The force of the blow is in the middle and that's where the lock should be to take the blows. How do i know? because I experimented on two doors using this lock. I placed one on top of my door were I see people putting it and i put one in the middle of the door. I found that the lock adsorbed the blows when the reinforced lock was put in the middle. We kicked the door down as hard as we could, we hit it with a sludge hammer, and also used a crow bar and it did not budge. When we put the lock on top we found that the door frame broke off and the door snapped because the pressure of the kicks and sludge hammer had snapped the door in half breaking the bottom part of the door. It all has to do with physics. This lock is well constructed and easy to open and close. I will say this. It's good to oil up the lock hinge from time to time to avoid friction which will occur over time. Also use concrete screws when drilling these onto the door frame. The screws that come with this are cheap and will break off if anyone dares to kick your door down. Overall this is an easy to install lock and well worth the money. I feel safe at night knowing nobody can break down my door even if they tried. This if placed right will withstand 500 and more lbs of pressure. SIDE NOTE: For extra added protection you should combine this with a metal door strike plate (as seen in photo). This makes it harder for people to break down your door and reinforces your door frame. Overall great solid buy and a must have to secure your home.

### ⭐⭐⭐⭐⭐ Enhance Home Security and Prevent Unauthorized Entry!
*by S***N on August 7, 2023*

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!

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-06-03*