--- product_id: 253382236 title: "Defender Security U 10827 Door Reinforcement Lock – Add Extra, High Security to your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction (Satin Nickel Anodized Finish)" brand: "prime-line" price: "VT7584" currency: VUV in_stock: true reviews_count: 7 category: "Prime Line" url: https://www.desertcart.vu/products/253382236-defender-security-u-10827-door-reinforcement-lock-add-extra-high store_origin: VU region: Vanuatu --- # Satin nickel anodized finish 3” hardened screws included Withstands 800 lbs force Defender Security U 10827 Door Reinforcement Lock – Add Extra, High Security to your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction (Satin Nickel Anodized Finish) **Brand:** prime-line **Price:** VT7584 **Availability:** ✅ In Stock ## Summary > 🛡️ Lock down your sanctuary with style and strength! ## Quick Answers - **What is this?** Defender Security U 10827 Door Reinforcement Lock – Add Extra, High Security to your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction (Satin Nickel Anodized Finish) by prime-line - **How much does it cost?** VT7584 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/253382236-defender-security-u-10827-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 resist up to 800 lbs of brute force, keeping intruders out and your peace of mind intact. - • **Swift & Secure Setup:** Includes premium 3” hardened screws for a hassle-free installation in minutes—security made simple. - • **Sleek & Durable Design:** Crafted from anodized aluminum with a satin nickel finish that blends modern style with lasting protection. - • **Child-Safe & Tamper-Resistant:** Spring-loaded mechanism installs high on doors, safeguarding curious kids and deterring lock picking or bumping. - • **Universal Fit for Swing-In Doors:** Versatile reinforcement compatible with any door thickness, elevating your home’s security effortlessly. ## Overview The PRIME-LINE Defender Security U 10827 Door Reinforcement Lock is a robust aluminum deadbolt lock designed to enhance home security by withstanding up to 800 lbs of force. Featuring a satin nickel anodized finish, it includes hardened 3” screws for quick installation on any swing-in door. Its child-safe, spring-loaded design prevents unauthorized entry and resists lock picking and bumping, making it a trusted choice for millennial professionals seeking reliable, stylish home protection. ## Description Buy PRIME-LINE Defender Security U 10827 Door Reinforcement Lock – Add Extra, High Security to your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction (Satin Nickel Anodized Finish) online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase. Review: Perfect Security Door Blocker - 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. Review: Its not a great product. - The screws that came along is a JOKE. Dont install those screws. IT is meant for butter boards. DISAPPOINTED.... ## Features - KEEP YOUR HOME SAFE – Designed to withstand 800 lbs. of force, this U 10827 satin nickel 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! - ADDITIONAL HOME SECURITY - Use this high security door reinforcement lock for additional home security on any swing-in door of any door thickness. It helps to ensure any door cannot be opened from the outside. - CHILD-SAFE AND TAMPER-RESISTANT – This door reinforcement lock has a spring-loaded design that is both child-safe and tamper-resistant. It can be installed higher on the door where your children can’t reach! Plus, not only can doors not be kicked in by intruders, it protects against lock picking and bumping while in the locked position. - WATCH THE VIDEO ON THIS PAGE for installation tips and operating instructions. - For all dimensional information please refer to the line art and compare to your needs before purchasing ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00D2K367Y | | Additional Features | Burglar Resistant, Child Safe, Withstands 800 Lbs of Strength, Spring-loaded Design | | Best Sellers Rank | #35,578 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #19 in Door Lock Replacement Parts | | Brand | PRIME-LINE | | Brand Name | PRIME-LINE | | Color | Satin Nickel | | Control Method | Touch | | Country of Publication | China | | Customer Reviews | 4.7 out of 5 stars 27,441 Reviews | | Finish Types | Satin Nickel | | Global Trade Identification Number | 00049793108272 | | Included Components | 3" hardened screws | | Item Dimensions | 6.4 x 3.5 x 7.6 centimeters | | Item Type Name | Door Reinforcement Lock | | Item Weight | 168 g | | Item dimensions L x W x H | 6.4 x 3.5 x 7.6 centimeters | | Lock Type | Deadbolt | | Lock type | Deadbolt | | Manufacturer | Prime-Line Products | | Manufacturer Part Number | U 10827 | | Material | Aluminum | | Material Type | Aluminum | | Model Name | Door Reinforcement Lock | | Model Number | U 10827 | | Number of Items | 1 | | Number of Packs | 1 | | Number of Pieces | 1 | | Recommended Uses For Product | Home security reinforcement, door reinforcement against forced entry | | Recommended uses for product | Home security reinforcement, door reinforcement against forced entry | | Shape | Rectangular | | Special features | Burglar Resistant, Child Safe, Withstands 800 Lbs of Strength, Spring-loaded Design | | Style Name | Lock | | UPC | 049793108272 | | Unit Count | 1 Count | ## Product Details - **Brand:** PRIME-LINE - **Item dimensions L x W x H:** 6.4 x 3.5 x 7.6 centimeters - **Lock type:** Deadbolt - **Material:** Aluminum - **Special features:** Burglar Resistant, Child Safe, Withstands 800 Lbs of Strength, Spring-loaded Design ## Images ![Defender Security U 10827 Door Reinforcement Lock – Add Extra, High Security to your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction (Satin Nickel Anodized Finish) - Image 1](https://m.media-amazon.com/images/I/61qMtnKyOxL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: Would the Fire Department have trouble entering a house with this lock in case of a fire?** A: I have experience breaking doors. I’ve put locks like this or better on my house knowing it will slow the fire dept down a bit but like others have said we have tools that will break even this. A halligan tool in the right hands will get through this pretty quickly, however with a lot of noise and certainly will deter the average criminal. 800lbs is a good amount of force to withstand, I think a average 200lb fireman with a halligan tool is probably capable of 1000lbs Of force applied to a certain spot on the door. If you put the lock high or low that will make breaking That more difficult. But the hydraulic tools fireman carry go up to 5000lbs. **Q: Does it only work when someone is inside?** A: I installed this on my front door. As others have said, you must be inside to lock it, and it cannot be locked or unlocked from the outside. So you have no access to the door from the outside when the lock is in place. I keep it locked all the time, even when I'm not home, because I go in and out through my back door. For extra safety and strength, I installed two of them on my front door, one about chest high and one about two feet from the floor. I did this because I have a glass panel on the top half of the door, so if a burglar breaks the window, the bottom blocker is out of reach. As extra security for my back door, I installed a security door (like a screen door except it's heavy gauge metal with its own handle lock and deadbolt).This door blocker is extremely well-made (heavy metal) and is a fantastic product. I highly recommend it. **Q: do the screws come with this, or if not, what size do I need to buy** A: Yes screws come with this device don't use them they're garbage go buy yourself some good heavy duty three to four inch screws from the hardware store so you can get into the frame of the house not just a door frame it'll make this device a lot more sturdy **Q: I bought this but cannot open it. Is mine defective or is there a trick to opening it?** A: Sometimes you are right. I had one defective out of three I received. The spring was loaded improperly which made the latch always to be in the open. Or if I forced it, the spring would dislodge and make it difficult to even close. And once closed it would not open. Now if that is the case then you need replacement. However, if you are trying to understand how it works, all you have to do is when the latch lodged in the recess, basically in its closed position, pull out as if you are navigating around the latch notch that stops it. So the idea is pull laterally first and then turn the latch around the notch. Hope that helps. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Perfect Security Door Blocker *by S***S on 2 April 2024* 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. ### ⭐ Its not a great product. *by H***S on 12 May 2021* The screws that came along is a JOKE. Dont install those screws. IT is meant for butter boards. DISAPPOINTED.... ### ⭐⭐⭐⭐⭐ Excelente tranca para portas! *by J***A on 7 December 2023* É uma excelente tranca para portas. Coloquei em um apartamento cuja maçaneta de fora abre a porta, para não precisar fechar com a chave no dia a dia. A trava é robusta e bastante segura! A porta fica sólida, não se mexe! Vale a pena! ## Frequently Bought Together - Prime-Line U 10827 Door Reinforcement Lock – Add Extra, High Security to your Home and Prevent Unauthorized Entry – 3 In. Stop, Aluminum Construction, Satin Nickel (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) - Hinge Outlet Satin Nickel Wood Screws, Heavy-Duty Screws for Doors, Cabinets, Furniture & DIY Projects (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.vu/products/253382236-defender-security-u-10827-door-reinforcement-lock-add-extra-high](https://www.desertcart.vu/products/253382236-defender-security-u-10827-door-reinforcement-lock-add-extra-high) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-10-18*