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High-Security Sliding Window Lock - 3-Second Installation
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High-Security Sliding Window Lock - 3-Second Installation

List Price: $3.99
Our Price: $2.09
You Save: $1.90 (48%)


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Windows and doors that slide open are a favorite entry point for criminals. They open & close silently and factory-installed locks & latches are often easy to defeat. This simple and reliable lock grabs onto window or door track and prevents further opening. Also lets you set maximum window-opening size - a great way to safeguard upper-level windows for children.


Instantly lock sliding windows and doors - no drilling or tools needed

Place on window or door track & tighten thumb screw; lock shut or allow partial opening

Prevents window from being forced or pried open from outside; easy removal and reusable

Fits most vertical or horizontal sliding windows & many sliding doors to 1/4" track-rim width

Heavy-duty extruded aluminum won't rust or corrode

Product Details:
Product Weight: 0.06 pounds
Average Customer Rating: based on 87 reviews
Customer Reviews:
Average Customer Review: 4.0 ( 87 customer reviews )
Write an online review and share your thoughts with other customers.

Most Helpful Customer Reviews

54 of 55 found the following review helpful:

4Good product, but doesn't work for meSep 24, 2007
By B. Nakano
These window locks are good, but don't work with my windows. I have new double paned windows and the runner where the lock should attach is to wide. Only purchase if your runner is under 1/4".

32 of 32 found the following review helpful:

5It serves its purposeJan 24, 2007
By Jess
Not much to say about window locks except that they do the trick and fit on all of my windows. For extra security, a representative from a glass company advised me to put one on the bottom and one on the top so that it's level.

43 of 50 found the following review helpful:

5It Works!Apr 29, 2007
By The Truth of It All
These little gems work very well! I don't remember where my Mother had bought them, but we used them in a house where we never had any problems up until it went up for sale, at which point they did stand up to the test of a Burgler! I also had one on my bedroom window that did not have a screen, and I was not able to force the window open when I had locked my keys inside! In my new apartment, they are auctually fairly visible if you stare into the window with the blinds open--we all know a visible deterant is an added security precautian! As a Security Supervisor, I would also recommend window bars or even just a cut or broken off piece of wood. The screw can be tightened as tight as you can squeeze it too. Hope this review has helped you! (Can't go wrong for the price) :)

14 of 16 found the following review helpful:

5Window LockAug 31, 2007
By B. Sullivan "Recovering Engineer"
Just what I wanted a simple window lock which limited how much a window can be opened. It works on both my horizontal and vertical sash windows. I was concerned when I learned that theives can easily defeat a standard window lock by pushing the window frame near the standard lock and separating the frames enough to defeat the standard lock. I wanted to still be able to open my windows for ventilation. This window lock lets me limit the window opening so that a thief could still defeat my standard lock but then could not open the window enough to get in.

7 of 7 found the following review helpful:

4Easy & AffordableOct 26, 2008
By Single Woman
Easy and quick to install and they feel secure - but I always double check when I open the windows and sometimes they need tightening. I still recommend them.

See all 87 customer reviews on Amazon.com
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