--- product_id: 2308961 title: "U 9847 Patio Sliding Door Loop Lock – Increase Home Security, Install Additional Child-Safe Security, 2-1/8 In. Hardened Steel Bar with Diecast Base, Chrome Plated (Single Pack)" brand: "prime-line" price: "€ 21.62" currency: EUR in_stock: true reviews_count: 13 category: "Prime Line" url: https://www.desertcart.de/products/2308961-u-9847-patio-sliding-door-loop-lock-increase-home-security store_origin: DE region: Germany --- # 2-1/8 inch hardened steel bar Weather-resistant chrome plating Quick install with included hardware U 9847 Patio Sliding Door Loop Lock – Increase Home Security, Install Additional Child-Safe Security, 2-1/8 In. Hardened Steel Bar with Diecast Base, Chrome Plated (Single Pack) **Brand:** prime-line **Price:** € 21.62 **Availability:** ✅ In Stock ## Summary > 🔐 Lock in peace of mind with style and strength! ## Quick Answers - **What is this?** U 9847 Patio Sliding Door Loop Lock – Increase Home Security, Install Additional Child-Safe Security, 2-1/8 In. Hardened Steel Bar with Diecast Base, Chrome Plated (Single Pack) by prime-line - **How much does it cost?** € 21.62 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/2308961-u-9847-patio-sliding-door-loop-lock-increase-home-security) ## 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 - • **Built to Last:** Hardened alloy steel bar with diecast nickel-plated base ensures corrosion resistance and long-term durability. - • **Precision Fit:** 2-1/8 inch reach designed to securely lock door panel to jamb—check compatibility for perfect security. - • **Effortless Setup:** All mounting hardware included for a fast, hassle-free installation—no professional needed. - • **Fortify Your Entry:** Secondary lock adds a robust layer of security to sliding patio doors, deterring unauthorized access. - • **Child-Safe Placement:** Install higher on the door to keep little explorers safe and prevent unsupervised outdoor access. ## Overview The Prime-Line U 9847 Patio Sliding Door Loop Lock is a heavy-duty secondary security device crafted from hardened alloy steel with a corrosion-resistant chrome finish. Designed for sliding patio doors, it offers a 2-1/8 inch reach to firmly secure the door panel to the jamb. Its child-safe installation option and included mounting hardware make it a practical, durable, and easy-to-install upgrade for enhanced home safety and protection. ## Description Product Description Add an extra layer of protection to your home with the Defender Security U 9847 Patio Sliding Door Loop Lock. Designed as a secondary locking device, this loop lock upgrades sliding patio door security by helping prevent unauthorized entry. It’s an ideal solution for homeowners looking to reinforce existing door locks without replacing their entire system. This loop lock also provides an added level of child safety by allowing installation higher on the door, keeping it out of reach of small children. This helps prevent unsupervised access to outdoor areas, making it a practical option for families concerned about safety. Constructed from hardened steel with a nickel-plated finish, the locking bar delivers strength and durability you can rely on. The included diecast mounting bracket and keeper are also nickel-plated for corrosion resistance and long-lasting performance. Designed to secure the sliding door panel to the jamb, the lock provides a stable and secure hold when engaged. Installation is quick and straightforward, with all necessary mounting hardware included. Whether used in residential or light commercial settings, this patio door loop lock is a simple and effective way to boost door security and peace of mind. The 2-1/8 inch reach ensures proper engagement for compatible door setups. Be sure to review the line drawing to confirm fit before purchasing. From the Manufacturer This patio sliding door loop lock is constructed of a hardened locking bar and a diecast mounting plate and keeper. The locking bar and plates of this lock come finished in a chrome plating and all required fasteners are included. This locking device features a 2-1/8 in. reach which is designed to secure the door to the jamb for increased safety of the home. This sliding door loop lock is easy to install and is used by many. This item is also available in 1-1/8 in., 1-3/16 in., 1-7/16 in., and 2-1/4 in. reaches. Review: Great for ANY door!! - I’m using this on my storm door as extra reinforcement so my special needs teenager can’t wear down the handle lock or push the door open and run out (like he did on my mother’s door, and so outsiders can’t rip the door open and get in. This is very strong, easy to install and easy to use. I’m 50, female, and it took me less than 10 minutes to get my drill and install this lock. I marked the holes on the frame with a pen, pre-drilled the holes with a drill bit and then drilled the screws in. It’s very secure in both the frame and the door, and I’m very happy with this product! I was not compensated in any way for my review. Review: GREAT quality, great product - PROS: -got here fast -very high quality -works on in-swing AND OUT-SWING doors CONS: -install is a little tricky if you want the latch to drop in smoothly -screw that come with it are not what you need to properly secure this to the door and frame EXPLANATIONS: I would definitely buy these again. My landlord refused to install deadbolts so I installed these because my front door is in-swing and my back door is out-swing. I wanted something to match but that would also be study like a deadbolt. The key is getting better screws. The screws that came with the prouct are size 6 (diameter) and are one inch long. I was looking for home security, so I got the longest screws I could find based on the width of the frame and the door. In the video, I am putting my whole body wight into opening the door (25F, 210 lbs) and NOTHING. I feel so safe in my house now :) Side note: youre supposed to use size 6 screws but you can use size 8, its just more finicky because they BARELY fit. ## Features - Secondary Door Security: Adds extra protection to sliding patio doors to help prevent unauthorized entry - Child-Safe Option: Can be installed higher on door to limit access and improve safety for households with children - Heavy-Duty Construction: Hardened steel loop with diecast bracket and nickel-plated finish for durability - Installation: Includes mounting hardware for quick and simple setup on door and jamb - 2-1/8 inch Reach Design: Secures door panel to jamb; verify dimensions for proper fit (not universal) - Used on patio sliding door systems as a secondary security locking device - 2-1/8 in reach - Chrome plated finish - Hardened steel locking bar with diecast constructed mounting plate and keeper ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B004AHVA5S | | Additional Features | Weather Resistant | | Best Sellers Rank | #20,771 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #21 in Door Lock Replacement Parts | | Brand | PRIME-LINE | | Brand Name | PRIME-LINE | | Color | Chrome | | Control Method | Touch | | Controller Type | Hand Control | | Customer Reviews | 4.6 out of 5 stars 8,658 Reviews | | Finish Types | Satin Nickel | | Global Trade Identification Number | 00049793098474 | | Included Components | lock, keeper and fasteners | | Item Dimensions | 0.63 x 3.13 x 4.56 inches | | Item Type Name | Loop lock | | Item Weight | 136 Grams | | Item dimensions L x W x H | 0.63 x 3.13 x 4.56 inches | | Lock Type | Loop lock | | Manufacturer | Prime-Line Products (Home Improvement) | | Manufacturer Part Number | U 9847 | | Manufacturer Warranty Description | Goods are warranted against manufacturing defects for 1 year. | | Material | Alloy Steel | | Material Type | Alloy Steel | | Model Name | Sliding Door Loop Lock | | Model Number | U 9847 | | Number of Pieces | 1 | | Recommended Uses For Product | Door | | Shape | Rectangular Prism | | Smart Home Compatibility | Not Smart Home Compatible | | Special Feature | Weather Resistant | | Style Name | Sliding Door | | UPC | 049793098474 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** PRIME-LINE - **Item dimensions L x W x H:** 0.63 x 3.13 x 4.56 inches - **Lock Type:** Loop lock - **Material:** Alloy Steel - **Special Feature:** Weather Resistant ## Images ![U 9847 Patio Sliding Door Loop Lock – Increase Home Security, Install Additional Child-Safe Security, 2-1/8 In. Hardened Steel Bar with Diecast Base, Chrome Plated (Single Pack) - Image 1](https://m.media-amazon.com/images/I/61ZQPllmXmL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great for ANY door!! *by D***3 on September 26, 2023* I’m using this on my storm door as extra reinforcement so my special needs teenager can’t wear down the handle lock or push the door open and run out (like he did on my mother’s door, and so outsiders can’t rip the door open and get in. This is very strong, easy to install and easy to use. I’m 50, female, and it took me less than 10 minutes to get my drill and install this lock. I marked the holes on the frame with a pen, pre-drilled the holes with a drill bit and then drilled the screws in. It’s very secure in both the frame and the door, and I’m very happy with this product! I was not compensated in any way for my review. ### ⭐⭐⭐⭐⭐ GREAT quality, great product *by L***E on May 24, 2024* PROS: -got here fast -very high quality -works on in-swing AND OUT-SWING doors CONS: -install is a little tricky if you want the latch to drop in smoothly -screw that come with it are not what you need to properly secure this to the door and frame EXPLANATIONS: I would definitely buy these again. My landlord refused to install deadbolts so I installed these because my front door is in-swing and my back door is out-swing. I wanted something to match but that would also be study like a deadbolt. The key is getting better screws. The screws that came with the prouct are size 6 (diameter) and are one inch long. I was looking for home security, so I got the longest screws I could find based on the width of the frame and the door. In the video, I am putting my whole body wight into opening the door (25F, 210 lbs) and NOTHING. I feel so safe in my house now :) Side note: youre supposed to use size 6 screws but you can use size 8, its just more finicky because they BARELY fit. ### ⭐⭐⭐⭐⭐ Great lock for sliding doors *by K***A on July 4, 2025* I have three (3) sliding doors in my house. They are all 26 years old now and two of the mechanical locks no longer hold. For years I had been putting a wooden block or PVC pipe between the slider and the frame. Finally got tired of bending down every night and morning to put the block in or take it out. Bought one of these stainless locks for the upstairs door. It worked so much better I got another one a few weeks later for the downstairs door. All hardware is included and a snap to install at any height you want. ## Frequently Bought Together - Prime-Line U 9847 Patio Sliding Door Loop Lock – Increase Home Security, Install Additional Child-Safe Security, 2-1/8 In. Hardened Steel Bar with Diecast Base, Chrome Plated (Single Pack) - Prime-Line U 9846 Patio Sliding Door Loop Lock – Increase Home Security, Install Additional Child-Safe Security, 1-1/8 In. Hardened Steel Bar with Diecast Base, Nickel Plated (Single Pack) - SDGINA Sliding Door Security Lock - Sliding Patio Door Lock for Glass Doors, Child Safety Foot Locks (Sliding Glass Door Lock, 1, Count) --- ## 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.de/products/2308961-u-9847-patio-sliding-door-loop-lock-increase-home-security](https://www.desertcart.de/products/2308961-u-9847-patio-sliding-door-loop-lock-increase-home-security) --- *Product available on Desertcart Germany* *Store origin: DE* *Last updated: 2026-07-14*