--- product_id: 20019110 title: "Prime-Line Door Reinforcement Plate, Stainless Steel, for 1-3/4 in. Doors" brand: "prime-line" price: "104.93 DT" currency: TND in_stock: true reviews_count: 11 url: https://www.desertcart.tn/products/20019110-prime-line-door-reinforcement-plate-stainless-steel-for-1-3 store_origin: TN region: Tunisia --- # Fits 1-3/4 inch thick doors Stainless steel strength Pre-punched, easy install Prime-Line Door Reinforcement Plate, Stainless Steel, for 1-3/4 in. Doors **Brand:** prime-line **Price:** 104.93 DT **Availability:** βœ… In Stock ## Summary > πŸ” Lock in peace of mind with sleek, stainless steel security! ## Quick Answers - **What is this?** Prime-Line Door Reinforcement Plate, Stainless Steel, for 1-3/4 in. Doors by prime-line - **How much does it cost?** 104.93 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/20019110-prime-line-door-reinforcement-plate-stainless-steel-for-1-3) ## 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 - β€’ **Universal Compatibility:** Works on metal, wood, and fiberglass doors, making it the versatile choice for any professional or homeowner. - β€’ **Fortify Your Entry Point:** Reinforces the vulnerable latch area to prevent forced entry and boost home security. - β€’ **Hassle-Free Installation:** Comes with all mounting hardware and pre-punched holes for a quick, no-fuss setupβ€”security in minutes. - β€’ **Durable Stainless Steel Build:** Crafted from corrosion-resistant stainless steel to ensure long-lasting protection and sleek modern finish. - β€’ **Precision Fit for Standard Doors:** Designed specifically for 1-3/4 inch thick doors with 2-1/8 inch bore and 2-3/8 inch backset for seamless integration. ## Overview The Prime-Line U 9551 Stainless Steel Lock and Door Reinforcement Plate is a robust security upgrade designed for 1-3/4 inch thick doors with standard bore and backset dimensions. Made from durable stainless steel, it reinforces the door’s latch area to prevent forced entry. Easy to install with included hardware and pre-punched holes, it fits metal, wood, and fiberglass doors, offering a modern, corrosion-resistant finish that blends security with style. ## Description Product 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 stainless Steel, the lock reinforcer plate comes in a natural finish. 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 features 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). From the Manufacturer This lock & door reinforcer is constructed of stainless steel and fits 1-3/4 in. thick doors. It features a recessed latch plate pocket for flush installation of hardware. This security device assists in preventing forced entry by reinforcing the weak spot of an entry door, and it can be used on both metal and wood doors. This item accommodates key-in knob locksets on doors that have 2-1/8 in. bore sizes with a backset of 2-3/8 in. The width of this door guard is 3-7/8 in. and it is 9-7/8 in. tall. These door reinforcers are easy to install and they are used by many. All installation fasteners are included with this item. ## 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 - Stainless steel ## Technical Specifications | Specification | Value | |---------------|-------| | Additional Features | Anti-Forced Entry | | Asin | B000OFTIL8 | | Best Sellers Rank | #116,099 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #318 in Door Lock Replacement Parts | | Brand Name | PRIME-LINE | | Color | Stainless Steel | | Control Method | Touch | | Customer Reviews | 4.4 4.4 out of 5 stars (1,131) 4.4 out of 5 stars | | Finish Types | Stainless Steel | | Global Trade Identification Number | 00049793195517 | | Included Components | Lock and Door Reinforcer | | Item Dimensions | 3.62 x 1.75 x 4.5 inches | | Item Type Name | Lock and Door Reinforcer | | Item Weight | 12.8 ounces | | Lock Type | Deadbolt | | Manufacturer | Prime-Line Products | | Manufacturer Part Number | U 9551 | | Manufacturer Warranty Description | Goods are warranted against manufacturing defects for 1 year. In no case is prime-line responsible for user related damage or damage incurred during installation. Warranty is void if products are subjected to abnormal conditions, misapplication or abuse. | | Material Type | Alloy Steel | | Model Name | Door guard | | Model Number | U 9551 | | Number Of Pieces | 1 | | Recommended Uses For Product | Reinforcing entry doors in residential and commercial buildings to prevent forced entry | | Style Name | Modern | | Unit Count | 1 Count | | Upc | 049793195517 | ## Product Details - **Brand:** PRIME-LINE - **Item dimensions L x W x H:** 3.88 x 1.75 x 9 inches - **Lock Type:** Deadbolt - **Material:** Alloy Steel - **Special Feature:** Anti-Forced Entry ## Images ![Prime-Line Door Reinforcement Plate, Stainless Steel, for 1-3/4 in. Doors - Image 1](https://m.media-amazon.com/images/I/51XtMzs6xqL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great adition to door *by on Reviewed in the United States March 10, 2025* Quality: The plate is high quality, with clean edges and precise dimensions.Functionality: As advertised, the product effectively reinforces the existing door set.After my wife's constant complaints, I purchased this item to prevent greasy fingerprints from accumulating on the door due to frequent entry and exit from the garage after working on projects. Now I can easily wipe off greasy marks and have a happy spouse.The installation required the mortising of the area behind the faceplate to ensure that the reinforcing plate sits flush with the door’s edge. Your installation may also require mortising the striker side of the jam.Tip: Remove the adhesive plastic coating from the plate after fitting and before final assembly. ### ⭐⭐⭐⭐⭐ It worked *by on Reviewed in the United States May 8, 2026* Worked well with door ### ⭐⭐⭐⭐⭐ Perfect *by on Reviewed in the United States June 7, 2026* Perfect fit, size, durability and easy installation ## 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? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/20019110-prime-line-door-reinforcement-plate-stainless-steel-for-1-3](https://www.desertcart.tn/products/20019110-prime-line-door-reinforcement-plate-stainless-steel-for-1-3) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-09-22*