--- product_id: 317685284 title: "Defender Security U 11442 Door Reinforcement Lock – Add Extra, High Security to Your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction" brand: "prime-line" price: "21.93 OMR" currency: OMR in_stock: true category: "Prime Line" url: https://www.desertcart.com.om/products/317685284-defender-security-u-11442-door-reinforcement-lock-add-extra-high store_origin: OM region: Oman --- # Defender Security U 11442 Door Reinforcement Lock – Add Extra, High Security to Your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction **Brand:** prime-line **Price:** 21.93 OMR **Availability:** ✅ In Stock ## Quick Answers - **What is this?** Defender Security U 11442 Door Reinforcement Lock – Add Extra, High Security to Your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction by prime-line - **How much does it cost?** 21.93 OMR with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/317685284-defender-security-u-11442-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 ## 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 polished brass 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 11442 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. ## Features - 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. - 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 | B08CQ6VK6Q | | Best Sellers Rank | 595,698 in DIY & Tools ( See Top 100 in DIY & Tools ) 1,348 in Lock Replacement Parts | | Brand | Prime-Line | | Colour | Brass | | Control Method | Touch | | Country of Origin | China | | Customer Reviews | 4.6 4.6 out of 5 stars (628) | | Finish | Polished | | Global Trade Identification Number | 00049793714428 | | Included Components | Lock, Mounting hardware | | Item Dimensions | 39 x 95 x 161 millimetres | | Item Type Name | Door Reinforcement Lock | | Item Weight | 0.19 Kilograms | | Lock Type | türschloss | | Manufacturer | Prime-Line Products | | Material | Aluminium, Brass | | Model Name | Door Reinforcement Lock | | Model Number | U 11442 | | Number of Items | 1 | | Number of Packs | 1 | | Number of Pieces | 1 | | Part Number | U 11442 | | Recommended Uses For Product | Türen | | Shape | Semicircular | | Special Features | Key Unlock | | Style | Modern | | UPC | 049793714428 | | Unit Count | 1.0 count | ## Product Details - **Brand:** Prime-Line - **Item dimensions L x W x H:** 39 x 95 x 161 millimetres - **Lock type:** türschloss - **Material:** Aluminium, Brass - **Special feature:** Key Unlock ## Images ![Defender Security U 11442 Door Reinforcement Lock – Add Extra, High Security to Your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction - Image 1](https://m.media-amazon.com/images/I/61zia7gLPKL.jpg) ![Defender Security U 11442 Door Reinforcement Lock – Add Extra, High Security to Your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction - Image 2](https://m.media-amazon.com/images/I/31E24+JgZML.jpg) ![Defender Security U 11442 Door Reinforcement Lock – Add Extra, High Security to Your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction - Image 3](https://m.media-amazon.com/images/I/31XCdPDKo4L.jpg) ![Defender Security U 11442 Door Reinforcement Lock – Add Extra, High Security to Your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction - Image 4](https://m.media-amazon.com/images/I/41bYkFQBZkL.jpg) ![Defender Security U 11442 Door Reinforcement Lock – Add Extra, High Security to Your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction - Image 5](https://m.media-amazon.com/images/I/41ZdjBe1VIL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: What is the actual width of the mounting plate? I have a two inch mounting surface, unless I push the plate behind the my door’s weather stripping.** A: 1 1/2"W. **Q: How wide of a gap do you need between the door and jam without mortising out?** A: 3/32 in. is just about right. That part that goes between the frame and the door is a little over 1/16 in. (5/64 in.) **Q: Where is this item made? Thx.** A: Brass **Q: Would this be effective on french doors?** A: If one of the french doors can be anchored into place (locked with a long, thick metal rod that goes into the threshold, door frame and foundation, and another rod at the top of the french door that slips into the doorframe and the stud that forms part of the structural wall above your doorframe), then yes. ## Frequently Bought Together - Prime-Line U 11442 Door Reinforcement Lock – Add Extra, High Security to your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction, Polished Brass (Single Pack) - Prime-Line U 9480 Door Strike, for Use with 5-1/2” and 6” Hole Spacing On Dead Latch and Deadbolt, Steel, Brass (Single Pack) - Hinge Outlet Wood Screws, Heavy-Duty Screws for Doors, Cabinets, Furniture & DIY Projects (Polished Brass,9 X 3 Inch, 24 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.com.om/products/317685284-defender-security-u-11442-door-reinforcement-lock-add-extra-high](https://www.desertcart.com.om/products/317685284-defender-security-u-11442-door-reinforcement-lock-add-extra-high) --- *Product available on Desertcart Oman* *Store origin: OM* *Last updated: 2026-10-15*