Window Wedge & Stopper - Made in USA, Baby Proof & Child Safety for Home Security (2-Pack) - Perfect for Nursery, Bedroom & Sliding Windows

This installs better on a vertical hanging window, but I was able to get it to work in my horizontal window. It’s a wedge that Velcro’s onto the window frame. Once it’s in, that window isn’t going to budge past it. So I was glad I found this product and recommend it.Two years ago tomorrow my (then 16 month old) son fell out a second story window of our house onto our driveway. After a terrifying ambulance ride and night of MRIs and X-rays the doctors concluded that the fracture in his skull wasn't too bad and he came home bruised but healthy. There were two intelligent, alert adults in the room when my son fell out the window. We were changing diapers and putting on pijamas with his siblings when in a couple wiggles he was up the chair and up onto the windowsill. The warnings on screens are sincere, they do nothing to retain a child leaning against them.When we went to childproof our windows after this we tried several options, including fancy locks that screwed in to the metal frame and could switch between locked and unlocked (in the event of a fire). One after another we'd go to open a window with muscle memory of the window opening all the way, and smash the locks right off.Velcro and tape didn't really seem like it would be much of a contender, but once we installed one of these we knew we had found the winner.I understand that different windows have different designs. We've used these in two different homes now (both built in the last 20 years) and have had zero problems with them. I'm truly baffled by the one star reviews that mention either the velcro slipping or the tape not holding. I really don't think I could force the window open with these in place if my life depended on it (but they're easy to remove). The velcro is robust and the tape/glue is incredible. Some have mentioned windows that can slide OVER these. Which I can't imagine (they're about the size of the smallest door stop), but apparently could be a problem for some windows.They do the three things you'd want any window lock to do, and they do it great. 1. They prevent a child from opening the window past a custom point that you set, but still allow for a breeze. 2. They prevent an intruder from forcing a window open, while still allowing for a breeze. 3.They are easy for an adult to remove in the event of fire. The velcro is incredibly tough horizontally, but are just easy enough for an adult to pop off pulling away (rather than across) the velcro.None of my intelligent kids, the oldest now five, have ever been able to remove one. I truly believe any adult could look at it and easily remove the wedge in the event of fire, even if they weren't aware the window had a locking mechanism (which I can't say for any other mechanism). Lastly, not only do you get to place the wedge where you want (for a one inch crack or a 4 inch crack or whatever), the strip of velcro that tapes/glues to the window frame is significantly longer than the wedge, so you can reposition it easily if you want a smaller or wider opening at any time (try that with screws).P.S. When we moved from out last home to this one a few months ago, we had to remove these. The taped/glued velcro strip was on incredibly tight. I had to tug very hard to remove it. But when it came off, it left no residue behind at all. Basically what i'm trying to say is that these are perfect in every way.My husband picked these out simply for the fact that it was a no drill installation. We use air conditioners in several rooms in our home, but still wanted to be able to “lock” the windows in place. We recently got new windows and the last thing we wanted to do was drill into the window frames. No need to for these wedges. The windows seem securely “locked” with these wedges in place. Perfect!Last summer we were burglarized while sleeping in our home. My big mistake was leaving the downstairs windows cracked open, which allowed the thief to quietly navigate his way in and back out of our home with our personal belongings. After learning our lesson the hard way, I still want to be free to leave the windows cracked at night without having to worry about scum bags sneaking in our home. I found these Window Wedges to be a nice compromise. The installation (if you want to call it that) took only a few seconds and I put this product to the test. I’m a pretty big guy (and relatively strong) so I tried a few different techniques to see what worked best. It seems to me that the best setup for our needs is to have the windows only open a few inches (about 4”). If you have the wedges in contact with your window in this position, it would be very difficult to open the window any wider (near impossible from the outside where you can’t get as much leverage). If you close the window (not enough to enable the locks) and thrust it open from the closed position, it would be very difficult, but possible with enough strength. I felt that this would be enough of a deterrent to cause a would-be home invader to find an easier target. If the wedges were places higher on the window (allowing it to open wider before hitting the wedges) there comes a point where you can generate enough power to pop the window over the wedges. I know that not all windows are made the same, so this might not apply to your set up, but it does for us. I recommend that if you’re using this product for the same reason we are, you do your own tests to find proper placement. One down side to the wedges (and our window design again) are if you do pop your window over the wedges. I believe my wife forgot the wedges were in place and opened our windows up all the way, popping over the wedges. If this happens to you, you’re in trouble… unless your windows can open inward (for cleaning I assume). It took me a few minutes of fumbling and trying to find tool that could remove the wedged wedge before I remembered this wonderful feature. Please learn from my mistake on this one.Finally found a safe way to keep my windows open a little wider than the stoppers that come with the windows. Great product!This product is great, easy to install and does what it should...HOWEVER!!!!! Holy overpriced! It you look at amazon.com you will see the exact same product for $9.99. The Canadian price is a total joke.Fast delivery. Excellent quality. Easy and fast installation.