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Prime-Line Products U 10827 Door Reinforcement Lock, 3 in. Stop, Aluminum Construction, Satin Nickel Anodized Finish

4.7 out of 5 stars 8,621 ratings
Amazon's Choice recommends highly rated and well-priced products.
Amazon's Choice for "door lock"

Price: $20.01 + $8.84 Delivery
  • Designed to withstand 800 lbs. of force
  • Tamper resistant and child-safe design
  • Installs in just minutes using 3" hardened screws (included)
  • Cannot be opened from the outside
New (6) from $18.30 + $9.80 Delivery

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Product description

Product Description

This high security door lock is constructed of extruded aluminum and comes in a satin nickel anodized finish. This reinforcement lock meets the Texas building code requirements, and it is designed to withstand up to 800 lbs. of force, making it virtually impossible to defy from the exterior. This lock features a spring-loaded, child-safe and tamper-resistant design that protects against unauthorized entry by preventing lock bumping and lock picking (while in the locked position). Installation of this non-handed reinforcement lock can be accomplished in just minutes, and it can be used on any swing-in door of any door thickness. All fasteners and installation instructions are included with this item. Fasteners include 3 in. long hardened screws that anchor into the door jamb and studs.

From the Manufacturer

This entry door stop is constructed from aluminum and comes finished in satin nickel. It protects against unauthorized entry by preventing lock bumping and lock picking while in locked position. Fits any size door and has a child-safe design.


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4.7 out of 5 stars
4.7 out of 5
8,621 global ratings
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Top review from Australia

Reviewed in Australia on 5 May 2019
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Top reviews from other countries

Sportfishing
4.0 out of 5 stars A GREAT supplemental lock IF . . .
Reviewed in the United States on 16 September 2019
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4.0 out of 5 stars A GREAT supplemental lock IF . . .
Reviewed in the United States on 16 September 2019
A great supplemental lock IF you install it with Tapcons and drop the junk 3" pot metal screws in the trash where they belong. Why provide a robust supplemental lock capable of taking quite a load, with junk screws, that also have small heads? See my fotos - they will hopefully communicate better than words my point. Anyone trying to force entry through a door with one of these locks using the provided screws is going to pretty easily either shear the screws off at the heads, or, the lock holes will quickly slip over the undersized screw heads. I like the lock. I like the design. I like that what the lock provides the average door with average locks a GREAT deal more security. But the manufacturer completely and knowingly fails its customers by providing screws that are junk.
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800 people found this helpful
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dindo t.
3.0 out of 5 stars Fiddly
Reviewed in the United Kingdom on 13 February 2021
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TO Allen
4.0 out of 5 stars Nice sleek supplementary lock for your entry door
Reviewed in Canada on 19 October 2016
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4.0 out of 5 stars Nice sleek supplementary lock for your entry door
Reviewed in Canada on 19 October 2016
I have seen these locks used in most homes in Vancouver but not in Toronto, so I was happy to find it on Amazon.
It's a much cleaner and modern look to those entry door latch/locks. It's simple low profile appearance is ideal for those with modern interiors.
One word of warning: the lock pictured is the silver finish not satin nickel finish. The satin nickel finish has more of a brownish-silver with a hint of purple in it, so it looks warmer and darker (see my photo below). Luckily this colour still worked on my door and interior so I won't be returning it.

The gap between the door and door frame should be at least 3/32" or else there won't be enough room to install this lock without shaving part of the door or door frame (and this is not really possible if the door or frame is made of metal). The gap in my door is 1/16" and the door brushes against the metal plate of this lock when closing which requires a little more push to get the door fully closed, so I will be shaving the door edge so that it could freely close on its own.
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10 people found this helpful
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Tyler
1.0 out of 5 stars Weak quality control by manufacturer
Reviewed in Canada on 28 August 2019
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3 people found this helpful
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Karen Smith
5.0 out of 5 stars Keeps the inmates in!
Reviewed in Canada on 10 November 2018
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2 people found this helpful
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