Prime-Line U 9819 Aluminum, Sliding Window Security Lock (4 Pack)

My toddler is autistic and loves to pop out our windows if they are open. I love fresh air so I had to find something that worked, especially since we live in a two-story! These work great and don’t budge. I feel way more relieved now!

Very satisfied with the sliding window lock I bought. Very useful and sturdy. Very easy to use and very secure.

Goy this product really fast works great and the price was really good

I needed to replace my old slide stoppers. I was pleased with how they were quick and easy to swap out the old and swap in these new. These were affordable and they are doing a great job.

Fits some not all. May need tweaking, Crank down with pliers if needed, goal is to not be able to slide or lift from outside.

The Prime-Line U 9819 Sliding Window Security Lock is a simple yet effective solution for securing sliding windows. I’ve installed these on several windows in my home, and they provide an added layer of security without the need for complicated hardware. Pros: Easy to install: Installation is straightforward and requires no tools. You just tighten the screw by hand to secure the lock in place. Sturdy and secure: Once in place, these locks hold firmly and prevent the window from being opened. It’s a great deterrent for intruders. Adjustable fit: The lock fits most standard sliding windows, whether aluminum or vinyl frames, making it versatile for different window types. Compact design: The small size of the lock means it doesn’t interfere with the appearance of the window or obstruct the view. Cons: Requires manual adjustment: You need to manually loosen and tighten the lock each time you want to open or close the window, which might be inconvenient for some. Overall, the Prime-Line U 9819 Sliding Window Security Lock is a great, budget-friendly option to increase window security. It’s durable, easy to use, and provides peace of mind knowing that your windows are more secure. Highly recommend it!

Works as intended but the screw is very tricky to turn if you have this in a door track.

Great way to secure sliding windows if you don’t have rods.

Good little lock for windows it's pretty strong for child proofing windows or balcony doors for toddler.

Simple, inexpensive yet effective solution for preventing windows from being slid open. Took me just a few minutes to install all 4

Funcionan excelente! Estoy muy contento!

Perfeita, bloqueia qualquer movimento da janela. Prende de uma forma discreta com segurança.

Estuve buscando una solución para asegurar las ventanas pues vivo en un quinto piso y tengo niños y gatos en casa, estos seguros fueron nuestra salvación. Cumplen perfectamente su función y son muy fáciles de instalar.