CAL DOUBLE-BOLT LOCKDouble Bolt Lock for Sliding Glass Doors - Newly Patented - Advanced Technology to Keep Your Family Safe and Secure - High Security Lock - Virtually Burglar Proof (White)

Totally worked great on my condo's sliding glass door!!! I live on the ground floor, too, and I'm only too aware of the ease with which break-ins occur through patio doors. My door is entirely too wide for a security bar, and it's not a very hefty frame. It's a very slim metal frame, and I don't have a lot of wall overhang to work with either.To further complicate matters, I have a very curious toddler, and she kept pulling out and hiding the metal pin that was installed on my door when I moved in. She also is tall enough now to open the darn latch, so I really had to step up my game finding a solution for my sliding glass door.I had been looking for MONTHS, literally since I moved in back in April, for something that would secure that door. I have tried a few different things, but had to return them all because they were too bulky for my specific setup, either requiring a thicker frame around the glass, or requiring a deeper inset in the wall.The Double Bolt lock was one of the pricier options, so I was reluctant to try it until my daughter started unlocking the door and I discovered it'd been unlatched for several days unbeknownst to me. After watching the videos and reading the reviews, I was sure that it'd be the answer to my problems. Sure enough, I was able to get it installed in about 20 minutes, and I feel immeasurably less worried about both how childproofed my patio door is, and that it's much, much more secure from intruders! I have given my door a serious tug and really tried to jiggle it, and it feels locked down like Ft. Knox. Love it!It's easy for me to operate, very low-profile, and blends in perfectly with my white patio door. I absolutely am thrilled with it, only wish I'd gotten it sooner -- I could have saved a lot of searching AND slept easier for months!My only quibble is that the childproof lock & key mechanism is kinda cheesy. I can't even get mine to turn without the key bending or the plastic lock trying to strip out, so I don't bother with that part. I installed the lock high enough that my daughter will not be able to reach the top latch for a long time, so it's a minor flaw I have no problem overlooking. The key is simply a flat metal head, like a flat screwdriver, so it would be simple enough for anyone determined enough to unlock anyway,

This lock is sturdy and would definitely secure your door. In my case I had to send it back because our sliders are not standard (we have a triple door) so the product can't be mounted, which was a bummer. My cousin ordered and installed them in his home and so did his neighbor so I know they work.

Great product. Very easy to install and use.

Okay so I had a pet door I removed from the sliding glass back deck door and had long ago lost the latch keeper in the door frame, so I wanted a daily use normal security door lock. Saw this one and thought it looked like it might be worth a shot.It came in today and it took me something maybe 10 to 15 minutes to install using the most basic household tools and not even looking at instructions. You have a pencil, a cordless drill/screwdriver, you're good to go. Easy enough to line up for smooth latch operation. Once installed it looks fine on the door; blends right in.Here are some things to consider:WHAT IT IS NOT:It is not some kind of high-security foolproof deadbolt system that will keep out a determined crook. After all, it's a glass sliding door to begin with.....WHAT IT IS:It is a nice looking, low profile, easy to install daily latch type door lock with a reasonalbe level of security compared to most other sliding glass door latch systems. Combine this lock with normal door handle latch, a siding door bar and a home alarm system - now you're about as secure as a sliding glass door could be.INSTALL: I used 2.5" deck screws with countersunk heads for the frame bolt keeper instead of the 1.75" machine screws they provided - picture shown - this gave a more flush mount and I was able to get into the frame timbers well enough that it's now a more secure lock.FIT/FINISH: Okay high points here. It does look really good in place compared to a lot of alternatives. Like it could have come with the door that way originally.MATERIALS: This is where I took away the star. Would have been easily 5-star product all-around, if it was all metal construction. The security load bearing elements are metal. The plastic components are not really "load-bearing" BUT they are still plastic components in a lock for a primary daily-use door to inside/outside the home. I get it, it's 2022 and we're all into keeping cost down and metal is more expensive, blah blah blah. I can tell you this speaking for all the home owners of America - I would have happily paid twice as much, for this to have been all metal construction. NOT for security reasons, but for durability, service life longevity, reliability reasons.Ok that said I'm happy with the purchase - and as long as you keep in mind what this is and what it isn't - I'd say I recommend it.

Works really great, didn't know this product even existed until I saw it up my cousin's rental so I got it from my rental and some of my customers and love it.

Absolutely easy to install and didn’t even need to look for instructions! It comes with three different sizes based on the door depth and additional hard plastic pieces in case you need to fill any extra space between the wall and the lock piece. I bought two of them… and it made my doors very sturdy!!!

This is a wonderful product, I have owned one of these prior, makes sliding doors secure, and placement makes it easy to use