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

Used for my RV windows. Both vertical and horizontal sliding windows. Simple to use and easy to remove... Definitely secure, no access from the outside.

Está muy bien y cumple su funcion

These window locks are awesome. They screw right onto the inside of your window frame without doing any damage, but nobody can open your window from the outside but easy to take off in case of emergency from the inside. Have them all over my house and I am extremely pleased.

Very simple way to improve home security - I live in an old rental apartment where some sliding window locks no longer fit the latches, someone could potentially take the screen off the window and gain entry to the apt. These are an affordable way to ensure the windows can be locked in place from the inside. Super simple but gives me piece of mind. As others have said, warn others in the house that they are there in case of a fire.Sturdy, functional, inexpensive. Should fit most raised sliding window rails, they are essentially adjustable screw clamps.

Good for securing the slide window in my grandsons room. Temporary fix until the window is repaired. Easy to use. Good price.

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!

we have a lot of condensation around our windows so unfortunately, all of the keys on these have rusted horribly. not a huge deal functionally, but kind of gross and definitely unsightly. the locks themselves are fine, so i guess the keys are just made of cheaper metal. i will stick to the painted white ones this company produces.

Stays on well, great for peace of mind