Adjustable Window Security Bar & Sliding Door Lock – Durable Child Safety Lock & Sliding Glass Door Security Bar Stopper for Home, Apartment & Patio, Works with Window Alarms – Regular – (2 Devices)

I purchased this as I love having my windows open during the day, and night, but where I am renting they don't have locks that allow you to only open it a few inches. I wanted to be able to leave them open while still feeling safe. These are everything I could have asked for and more. I was worried about a few of the reviews saying the sticky tape wore down and it rendered them useless, but what I think they did was only use one of the tapes given. You need to use all of the tape - three for each item! They will NOT move at all once you do that. I've been able to have my windows open throughout the day and night, get some fresh air blowing through, without the worry of someone breaking in. I didn't really want to spend the money initially, but these are well worth the price. Piece of mind is priceless, safety is priceless. This company seems to be high quality and I'm thankful for my purchase. 10/10!

This is an extraordinary item, something that I did not even know existed until I accidentally found it on Amazon. The window shown in the picture has a broken piece of hardware that cannot be replaced. A new window seemed the only option. Lock it Block It is the perfect solution. Clear directions, easy to use, perfect fit, and an added bonus of additional security. I am VERY PLEASED!

These are very easy to install once you get the paper off the Velcro. So far only one had fallen off with the Velcro coming off as well.

Perfect for the job

Why did you pick this product vs others?: I feel more secure when I have these on the window w my portable AC. Sturdy, multiple settings.

I wish it gave the measurements from each hole. I measured the window and per the listed measurements, it should have fit perfectly, but the holes to lock in place, actually don’t work for the measurement at all, so it doesn’t really work :/

This is a well made “does what it says” safety item for your windows. It doesn’t slide out of place like several others I tried, doesn’t have a meticulous measurement requirement like others I’ve tried. It’s easy to install, easy to use and gives peace of mind the window won’t move past you set it. I highly recommend this

This is my first review forever. I am an Amazon prime customer and bought many things without shipping I need over the years, only return things we can’t use or not satisfied. I paid $15 for shipping when I placed this order and it had four items in one box, although I only need one when I placed the order because the video is showing they are useful and I thought I can use the rest three in the future. The adhesive came with 9 in a sheet, the instructions said to put three on each, which is short of 3, also the adhesive is not working well and I had to put one extra and thought to make it sturdy, after days on the window, it kept moving and I really don’t like it, I decided to return it and I had to pay $8 ish for shipping again, this is insane but I am still returning the order. I will never buy anything from this company again.