---
product_id: 54143327
title: "Defender Security U 11325 Door Reinforcement Lock – Add Extra, High Security to Your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction, Brushed Chrome (Single Pack)"
brand: "prime-line"
price: "$78.03"
currency: USD
in_stock: true
reviews_count: 13
category: "Prime Line"
url: https://www.desertcart.us/products/54143327-defender-security-u-11325-door-reinforcement-lock-add-extra-high
store_origin: US
region: United States of America
---

# Aluminum construction & fasteners Fits any swinging door thickness 800 lbs force resistance Defender Security U 11325 Door Reinforcement Lock – Add Extra, High Security to Your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction, Brushed Chrome (Single Pack)

**Brand:** prime-line
**Price:** $78.03
**Availability:** ✅ In Stock

## Summary

> 🛡️ Lock in peace of mind with Defender’s sleek, unbreakable shield!

## Quick Answers

- **What is this?** Defender Security U 11325 Door Reinforcement Lock – Add Extra, High Security to Your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction, Brushed Chrome (Single Pack) by prime-line
- **How much does it cost?** $78.03 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/54143327-defender-security-u-11325-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

- • **Universal Fit:** Versatile installation on any swinging door thickness for seamless home-wide security.
- • **Unmatched Strength:** Engineered to withstand up to 800 lbs of force, securing your home against forced entry.
- • **Sleek & Durable Design:** Premium brushed chrome aluminum finish blends modern style with long-lasting durability.
- • **Effortless Installation:** Includes all fasteners for quick setup—upgrade your door security in minutes.
- • **Child-Safe & Tamper-Proof:** Spring-loaded design installs high to keep kids safe and deter lock picking or bumping.

## Overview

The Defender Security U 11325 Door Reinforcement Lock is a high-strength, tamper-resistant lock designed to add an extra layer of protection to any swinging door. Crafted from durable aluminum with a stylish brushed chrome finish, it withstands up to 800 lbs of force and features a child-safe, spring-loaded mechanism. Easy to install with included fasteners, this lock enhances home security while maintaining a modern aesthetic.

## Description

Shop Defender Security U 11325 Door Reinforcement Lock – Add Extra, High Security to Your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction, Brushed Chrome (Single Pack). Free delivery on eligible orders of £20 or more.

Review: Perfect!! - Easy to install, very secure! Need a lock for my bedroom and with a uneven door frame this was the perfect choice.
Review: Works extremely well - Purchased to keep the kids out of our bedroom when, well, you know what might be happening... Replaced the screws per other reviews which advised to go with a better set. The door lock looks appealing and is very sturdy. I just wish it had a little better advice on positioning as it's hard not to install with too much wiggle (ie. door opens a little before stopping). Also installed a second set on the family bathroom. A clear advantage of the product is that one cannot lock by accident from outside. However, it would be impossible to override it if the person becomes incapacitated. So maybe not ideal for older people.

## Features

- KEEP YOUR HOME SAFE - Designed to withstand 800 lbs. This U 11325 door reinforcement lock with brushed chrome finish helps prevent doors from entering, increasing the security of your home and keeping you and your family safe
- EXTRA HOME SECURITY - Use this high security door reinforcement lock for added security at home on any swinging door of any thickness. It helps ensure that each door cannot be opened from the outside.
- CHILD SAFE & TAMPERPROOF - The spring loaded design can be installed at a higher level to ensure it is child safe. Plus, this tamper evident door latch protects against door entry, lock picking and bumps.
- International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06XD79NX3 |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 138,390 in DIY & Tools ( See Top 100 in DIY & Tools ) 278 in Lock Replacement Parts |
| Colour | Brushed Chrome |
| Customer Reviews | 4.7 4.7 out of 5 stars (27,351) |
| Date First Available | 3 Mar. 2017 |
| Finish | Brushed |
| Included Components | Reinforcement lock, fasteners |
| Item Package Quantity | 1 |
| Item Weight | 168 g |
| Item model number | U 11325 |
| Manufacturer | Prime-Line |
| Material | Metal |
| Number of Pieces | 1 |
| Part Number | U 11325 |
| Plug profile | Jamb mount |
| Product Dimensions | 3.81 x 9.68 x 16.36 cm; 167.83 g |
| Shape | Form |
| Size | 7.62 cm |
| Special Features | Anti-Theft |
| Style | Modern |

## Product Details

- **Brand:** Prime-Line
- **Item dimensions L x W x H:** 38 x 97 x 164 millimetres
- **Lock type:** Deadbolt
- **Material:** Metal
- **Special feature:** Anti-Theft

## Images

![Defender Security U 11325 Door Reinforcement Lock – Add Extra, High Security to Your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction, Brushed Chrome (Single Pack) - Image 1](https://m.media-amazon.com/images/I/51MUKkMtjaL.jpg)
![Defender Security U 11325 Door Reinforcement Lock – Add Extra, High Security to Your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction, Brushed Chrome (Single Pack) - Image 2](https://m.media-amazon.com/images/I/51GNE0w3N7L.jpg)
![Defender Security U 11325 Door Reinforcement Lock – Add Extra, High Security to Your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction, Brushed Chrome (Single Pack) - Image 3](https://m.media-amazon.com/images/I/61aO2RR0++L.jpg)
![Defender Security U 11325 Door Reinforcement Lock – Add Extra, High Security to Your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction, Brushed Chrome (Single Pack) - Image 4](https://m.media-amazon.com/images/I/71InCEDUqwL.jpg)
![Defender Security U 11325 Door Reinforcement Lock – Add Extra, High Security to Your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction, Brushed Chrome (Single Pack) - Image 5](https://m.media-amazon.com/images/I/71nO7L-G0VL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect!!
*by R***O on 21 February 2025*

Easy to install, very secure! Need a lock for my bedroom and with a uneven door frame this was the perfect choice.

### ⭐⭐⭐⭐⭐ Works extremely well
*by S***7 on 6 December 2025*

Purchased to keep the kids out of our bedroom when, well, you know what might be happening... Replaced the screws per other reviews which advised to go with a better set. The door lock looks appealing and is very sturdy. I just wish it had a little better advice on positioning as it's hard not to install with too much wiggle (ie. door opens a little before stopping). Also installed a second set on the family bathroom. A clear advantage of the product is that one cannot lock by accident from outside. However, it would be impossible to override it if the person becomes incapacitated. So maybe not ideal for older people.

### ⭐⭐⭐⭐⭐ Best lock ever
*by K***T on 16 December 2025*

Absolutely fantastic this lock one of the best I’ve come across, my home feels safe and secure and trust me no one is getting through my street door, best buy yet definitely recommend 🙌🏽💞🥰

## Frequently Bought Together

- Prime-Line U 11325 Door Reinforcement Lock – Add Extra, High Security to your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction, Brushed Chrome (Single Pack)
- Prime-Line U 10385 Door Strike, for Use with 5-1/2 In. and 6 In. Hole Spacing On Dead Latch and Deadbolt, Steel, Satin Nickel (Single Pack)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.us/products/54143327-defender-security-u-11325-door-reinforcement-lock-add-extra-high](https://www.desertcart.us/products/54143327-defender-security-u-11325-door-reinforcement-lock-add-extra-high)

---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-19*