Lock-It Block-It 4-pack contains 4 regular size home security adjustable window bars. Fits most windows.
Regular size:
-17 inches collapsed
-30 inches fully extended.
Regular - 4 Devices
Rating is 4.3 out of five stars based on 28 reviews
$55.50Price

Reviews
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!
Finally I found a solution to securing my windows. So nice to have them open just a bit for circulation, but having a piece of mind that nobody can slide them open from outside. The bar is of good quality and is very easy to install. Wish they would have another version that is 1.5 times the size for bigger windows. Great product. Beats putting the little 'clips' on the window slide that always seem to move when a tiny bit of force is applied. This bar will not move, not matter how much force is applied.
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!
Measure the window beforehand as recommended, and it was under the recommended measurement but can�t get it to the right size. I even had to take off the ends but the alignment for the window was off so it was loose or couldn�t even get in the window.
I ordered 8 bars for my horizontal windows. I was able to adjust them to size needed. I would definitely purchase again and recommend to anyone interested in needing extra protection.