1 Pack Window Security Bars Adjustable 11"-18",Portable Small Sliding Window Lock Bar for Child Safety/Anti-Theft,Window safety lock with Rubber Base for Vertical and Horizontal Window-Black

very sturdy not flimsy window bars

Did not expand enough, returned

Great product . But the pictures are deceptive. It only comes with one. Only really needed one though so 5 stars.

This is a good product, but it didn't work for the types of windows I have in my rental.

I got this Gadgetzan Window Security Bar to keep one of my windows secure, and it’s actually pretty good. It’s way sturdier than just sticking a piece of wood in there, and it fits nicely since it’s adjustable. The rubber base helps it stay in place, and it was super easy to set up-no tools or anything, which I loved.That said, if someone (or a pet) shakes the window hard enough, I could see it possibly slipping out, but it would take a great deal of effort, so just keep that in mind, but I am pretty happy, just know it’s not perfect. For the price, it does the job and makes me feel a bit safer. Definitely worth it if you just need something simple and quick to install.

We recently installed several window units in our home and needed something to ensure that the windows couldn’t be opened from the outside. These work perfectly.

Great quality, sturdy materials. So easy to install

Didn’t expect this to be so small, won’t fit in the windows I intended on using them for.