Double Bolt Lock for Sliding Glass Doors - Newly Patented - Advanced Technology to Keep Your Family Safe and Secure - High Security Lock - Virtually Burglar Proof (White 2-Pack)

It took some work to install these with my setup. This was due to one of my doors sagging in one corner. However, I belive most wouldn't have an issue. My second door was a smooth install. Measure twice, drill once. This unit does make the door much mores secure. I've had multiple friends see these, and ask what it was. Afterwards, they bought then themselves. Much easier to use than the dowel in the tray option. My one issue is that the key lock option is utter garbage. However, it's not a deal breaker, as I have no need for it. The wife feels safe, and that's what I was after.

I had a sticky lock that took an adult male to close most of the time. So swapped it out with this eventually and it makes getting in and out a breeze. Plus we installed a pet access door with a panel next to the sliding door so the original lock became useless anyway and this was what we used instead.

A little modifications to the slider channel to make a smooth fit. This was not plug and play. With that said, I like it. Seems more secure than the slider lock and it looks well made and like it will last. I would recommend as a security feature and it is pretty inexpensive.

I had a different brand before this one and I like both just as well. I had to get an extended latch from the company to make this work because my door jam was deeper than most.

Needed this to keep my twins from escaping through the slider door when we weren't looking. This does the job nicely.

I have two sliders that are the kind where the door slides on the outside track (yeah most stupid door design I can think of as far as home security goes). Did a fair amount of research on what home security companies recommend to secure sliders, and landed on this lock. Easy to install with just a drill and screwdriver - took me 15 minutes for both. Also installed a 1/4" by 1.5" board in the upper track of each door so that there is nowhere for the door to go if a burglar tries the old crowbar-under-the-door-to-lift-it trick.

Over time the top pin gets loose and has the potential for falling into the lock and preventing the door from opening. This is a huge safety risk because the lock basically needs to be disassembled to be removed from the door or the pin MacGyver’ed op and out of the lock. If there was a fire the occupant would definitely be trapped. To fix the issue I’ve epoxied the pins to the latches to prevent them from coming loose. I will watch this over time after this fix to see if the pins come loose again. So far from 2018 it’s happened twice. Edit July 16, 2023: issue has not occurred since I epoxied the pins.

The Cal Double Bolt Lock was easy to install and makes the sliding glass door feel so much more secure. It feels like the sliding glass door can't get lifted out of its channel. Great product.

Excellent Product, works well, made well. Way better than putting an ugly bar in your sliding door for security. Easy to use for everyday. How does it work against a burglar?....I hope I never find out but my quess it that it works the same or better than most similar sliding door security and it would make it much harder to lift the door off the track.

cumple lo que promete, pero no es de muy buena calidad, deja mucho que desear

Exelente

Does a nice job of giving me a better peace of mind. Easy to install and easy to use.

Product does exactly what is advertised, easy installation and adds extra protection to back door sliding door