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🔐 Lock down your peace of mind with solid brass strength!
The PRIME-LINE Defender Security U 9551 is a solid brass lock and door reinforcer designed to prevent forced entry by strengthening the latch area of 1-3/4 inch thick doors. Featuring a stainless steel finish, pre-punched mounting holes, and included hardware, it ensures a quick installation while providing durable, reliable security for both metal and wood doors.




























| ASIN | B000OFTIL8 |
| Additional Features | Anti-Forced Entry |
| Best Sellers Rank | #132,926 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #626 in Door Latches & Bolts |
| Brand | PRIME-LINE |
| Brand Name | PRIME-LINE |
| Color | Stainless Steel |
| Control Method | Touch |
| Customer Reviews | 4.4 out of 5 stars 1,098 Reviews |
| Finish Types | Stainless Steel |
| Global Trade Identification Number | 00049793195517 |
| Included Components | Lock and Door Reinforcer |
| Item Dimensions | 9.2 x 4.4 x 11.4 centimeters |
| Item Type Name | Lock and Door Reinforcer |
| Item Weight | 363 g |
| Item dimensions L x W x H | 9.2 x 4.4 x 11.4 centimeters |
| Lock Type | Deadbolt |
| Lock type | Deadbolt |
| Manufacturer | Prime-Line Products |
| Manufacturer Part Number | U 9551 |
| Material | Alloy Steel |
| 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 |
| Recommended uses for product | Reinforcing entry doors in residential and commercial buildings to prevent forced entry |
| Shape | shape |
| Special features | Anti-Forced Entry |
| Style Name | Slip On |
| UPC | 049793195517 |
| Unit Count | 1 Count |
A**R
de excelente calidad
Cumplio las expectativas de mi compra y es un producto de excelente calidad
C**N
Protége bien la porte contre inteuision
Excellent
I**M
Great adition to door
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.
A**R
Measure the hole first from edge to center and see if it is the right one!
It was to short did not reach the pad lock hole no good for me,measure from edge of door to center of hole does not measure the same at all sorry it stainless steel nice nothing els to say sorry
G**E
It worked
Worked well with door
Trustpilot
1 day ago
2 weeks ago