--- product_id: 383193097 title: "Prime-Line U 9551 Stainless Steel Lock and Door Reinforcement Plate for 1-3/8 in. Thick Doors, Stainless Steel Finish (Single Pack)" brand: "prime-line" price: "258.90 DT" currency: TND in_stock: true category: "Prime Line" url: https://www.desertcart.tn/products/383193097-prime-line-u-9551-stainless-steel-lock-and-door-reinforcement store_origin: TN region: Tunisia --- # Reinforces door lock area Pre-punched for easy install Durable stainless steel build Prime-Line U 9551 Stainless Steel Lock and Door Reinforcement Plate for 1-3/8 in. Thick Doors, Stainless Steel Finish (Single Pack) **Brand:** prime-line **Price:** 258.90 DT **Availability:** ✅ In Stock ## Summary > 🛡️ Lock down your space with style and strength! ## Quick Answers - **What is this?** Prime-Line U 9551 Stainless Steel Lock and Door Reinforcement Plate for 1-3/8 in. Thick Doors, Stainless Steel Finish (Single Pack) by prime-line - **How much does it cost?** 258.90 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/383193097-prime-line-u-9551-stainless-steel-lock-and-door-reinforcement) ## 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 Endure:** Crafted from corrosion-resistant stainless steel for long-lasting protection and a sleek finish. - • **Effortless Installation:** Pre-punched design with included hardware means you’re secured in minutes, no hassle. - • **Fortify Your Entry Point:** Reinforces the vulnerable latch area to prevent forced entry and boost home security. - • **Upgrade Your Peace of Mind:** A subtle yet powerful security upgrade that blends modern style with robust defense. - • **Universal Fit for 1-3/4" Doors:** Precisely engineered for standard door thickness and bore dimensions, ensuring seamless compatibility. ## Overview The Prime-Line U 9551 Stainless Steel Lock and Door Reinforcement Plate is a precision-engineered security accessory designed for 1-3/4 inch thick doors with 2-1/8 inch bore holes. Made from durable stainless steel, it reinforces the door’s latch area to prevent forced entry. Featuring a pre-punched design and included mounting hardware, it offers quick, hassle-free installation while providing a sleek, corrosion-resistant finish that enhances both security and aesthetics. ## Description Defender Security U 9551 Stainless Steel Lock and Door Reinforcer assists in preventing forced entry by reinforcing the weak spot of an entry door. It can be used to reinforce and repair both metal and wood doors. Made of solid brass construction, the lock reinforcer plate comes finished in brass. All the necessary mounting hardware is included for a quick and easy installation. The lock reinforcement plate is pre-punched for mounting. The reinforcer is designed for 1-3/8 inch thick doors that have mortise or drive-in latches. It featuress one 2-1/8 inch bore with a 2-3/8 inch backset. The door reinforcer is recessed. Please refer to the line art drawing for dimensions and compare to your needs before purchasing (Not Universal). ## Features - ADDED SECURITY – Prevent forced entry by reinforcing the weak spot of your door with the non-recessed door lock reinforcer; use to reinforce and repair both metal, fiberglass and wood doors when the latch area has been compromised - BUILT TO LAST – Made of stainless steel, the door lock reinforcement plate comes in a natural finish to fit over a single bore hole on your door - EASY INSTALLATION – All the necessary mounting hardware is included with the lock reinforcement plate for a quick and easy installation; the door reinforcer plate is pre-punched for mounting. Remove the protective film after installation - DIMENSIONS – The door lock reinforcement plate is designed for 1-3/4 inch thick doors only that have a 2-1/8 inch bore hole through the door, with a 2-3/8 inch backset from the edge of the door to the center of the bore holes - NOTE – Make sure to dry fit the 3-7/8 inch wide by 9 inch tall with a 0.03 inch thickness door lock reinforcer before permanently installing and refer to the line art drawing and compare with your needs before purchasing - Used to reinforce and repair doors to aide in preventing forced entry - Fits 1-3/4 in. thick doors, 2-1/8 in. bores, 2-3/8 in. backset, 3-7/8 in. width x 9 in. height - Stainless steel ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000OFTIL8 | | Best Sellers Rank | 465,531 in DIY & Tools ( See Top 100 in DIY & Tools ) 4,358 in Latches & Bolts | | Brand | Prime-Line | | Colour | Stainless Steel (If the Intention Was to Describe Material, Not Color) | | Control Method | Push Button | | Country of Origin | USA | | Customer Reviews | 4.4 4.4 out of 5 stars (1,098) | | Finish | Stainless Steel | | Global Trade Identification Number | 00049793195517 | | Included Components | Prime-Line Products U 9551 Lock & Door Reinforcer, 2-1/8 in. x 2-3/8 in. x 1-3/4 in., Stainless Steel, Recessed | | Item Dimensions | 9.2 x 4.4 x 11.4 centimetres | | Item Type Name | Add Extra Security to Your Home, Helps Prevent Forced Entry | | Item Weight | 0.8 Pounds | | Lock Type | Deadbolt | | Manufacturer | Prime-Line Products | | Manufacturer Warranty Description | Goods are warranted against manufacturing defects for 1 year. | | Material | Alloy Steel | | Model Name | Door guard | | Model Number | U 9551 | | Number of Items | 1 | | Number of Packs | 1 | | Number of Pieces | 1 | | Part Number | U 9551 | | Recommended Uses For Product | Sicherheit zu Hause, Verstärkung von Eingangstüren, verhindert gewaltsames Eindringen | | Special Features | Diebstahlschutz, Einfach anzubringen, Einfach zu installieren, Robuster Schutz, Rostfrei | | Style | Modern | | UPC | 049793195517 | | Unit Count | 1.0 count | ## Product Details - **Brand:** Prime-Line - **Item dimensions L x W x H:** 9.2 x 4.4 x 11.4 centimetres - **Lock type:** Deadbolt - **Material:** Alloy Steel - **Special feature:** Diebstahlschutz, Einfach anzubringen, Einfach zu installieren, Robuster Schutz, Rostfrei ## Images ![Prime-Line U 9551 Stainless Steel Lock and Door Reinforcement Plate for 1-3/8 in. Thick Doors, Stainless Steel Finish (Single Pack) - Image 1](https://m.media-amazon.com/images/I/51XtMzs6xqL.jpg) ![Prime-Line U 9551 Stainless Steel Lock and Door Reinforcement Plate for 1-3/8 in. Thick Doors, Stainless Steel Finish (Single Pack) - Image 2](https://m.media-amazon.com/images/I/21tGgxPILKL.jpg) ![Prime-Line U 9551 Stainless Steel Lock and Door Reinforcement Plate for 1-3/8 in. Thick Doors, Stainless Steel Finish (Single Pack) - Image 3](https://m.media-amazon.com/images/I/41kQXJMgU2L.jpg) ![Prime-Line U 9551 Stainless Steel Lock and Door Reinforcement Plate for 1-3/8 in. Thick Doors, Stainless Steel Finish (Single Pack) - Image 4](https://m.media-amazon.com/images/I/41BoZa2G3DL.jpg) ![Prime-Line U 9551 Stainless Steel Lock and Door Reinforcement Plate for 1-3/8 in. Thick Doors, Stainless Steel Finish (Single Pack) - Image 5](https://m.media-amazon.com/images/I/41VAnK1EqyL.jpg) ## Frequently Bought Together - Prime-Line U 9551 Stainless Steel Lock and Door Reinforcement Plate for 1-3/4 In. Thick Doors, Stainless Steel Finish (Single Pack) - Prime-Line U 9476 Maximum Security Latch Strike, 1-1/4 In. x 7-7/8 In., Steel, Chrome Plated (Single Pack) - Prime-Line U 9585 Stainless Steel Lock and Door Reinforcement Plate for 1-3/8 In. Thick Doors, Stainless Steel Finish (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.tn/products/383193097-prime-line-u-9551-stainless-steel-lock-and-door-reinforcement](https://www.desertcart.tn/products/383193097-prime-line-u-9551-stainless-steel-lock-and-door-reinforcement) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-09-26*