Burglabar 4 Pack for Sliding Patio Door Locks and Sliding Windows.

I have used these before and have been looking for a new source as my previous source no longer carries them. Great product...easy to use and does the job perfectly.

I've been using Burglabars for YEARS! Whether I was in an apartment rental or my own single-family home, these offer an extra layer of protection against break-ins! Just locking your sliding glass door isn't enough! These are easy to install, and easy to open and re-close. I put two on my large sliding glass doors, one close to the top and one close to the bottom. Two on each window, left and right side. Great if there are small children in the house as well. Look no further, this brand is the best!

I didn't buy these for a long time, because I worried that whenever it fails the flapper will fall straight down and is a security/safety risk. But I used one that was installed upside down and I had to buy them. If the flapper fails it will fail to the locked position (unless there's a serious trauma that destroys the whole hinge). This is good for most people unless they need to guarantee that the door is unlocked and have no other access. Also, I can easily open and close this with my left pinky. Or if I just don't slam it, it opens and closes silently. I tried the kind that's like a 2x2" square and you have to squeeze the top and bottom and then pull the whole thing out. It required 2 hands or 3 awkward fingers, and was loud, with a click when opening and closing-just a minor annoyance. That one was also bigger and more noticeable. I've also tried the kind that's like 1x2" and the inner rectangle pulls out at an angle to lock in. It's hard to explain, but either way, Ive tried three different locks and this is the best by far. And it's clear so we barely notice it.

Easy to install and a harder material than the last type I bought.

We got these for 1st floor windows and sliding doors. The ones on the sliding doors were in a not temperature controlled full-sun location, so the glue detached in the heat of the summer sun. Also the glass is old enough to not be the double pained insulated doors. Had to go back to a stick in the track for security. Otherwise they work amazing in shaded or temperature controlled areas or double pained windows with the gas insulation between. The clear color gives a less obvious look to the windows making visibility a non-issue. And fit just right for opening windows and doors when disengaged.

Just love these little gems they work really well. You can use them on any window not just sliders.

Easy to install. The adhesive is holding very well (after a week or so. I’ve got one in a sliding door with a view and it isn’t very distracting to the eye. Most importantly, they keep my toddler from opening the doors.

These work great home or apartment.

Al ser de plástico, creo que la seguridad te la dará al instalarlo lo más cerca de la otra puerta estando ambas bien cerradas y con seguro.

I've ordered these twice (one was a free replacement because I assumed the poor product was a fluke) and the adhesive does not live up to expectations. I put these on south facing windows in afternoon sunlight and after about six months, I could easily pluck them off my window.

Fell off the door within 48 hours of being installed.

Easy to put together and fits perfectly. Makes me feel a bit safer.

Not very sturdy,if you forget to unlock before you open they come off the door and will not stick again,not a good investment