4PCS Sliding Window Lock Security with Key for Sliding Door, Child Safety Locks Home Security Childproof Door Lock, Aluminum Protective Anti-Theft Lock Push Window Kids, White

A little complicated to install, but once you anticipate how a thief could see the lock and open the windows up or sideways, installing the rest was a breeze!

good product for the price

Easy to install on sliding glass door. Makes it impossible for an intruder to lift the slider panel out for access.

Bought to experiment that they fit my purpose......... Excellent. Just the job, more orders to follow.

One key works on all the locks. I needed a metal drill bit to install them.

It would have worked nicely but it was the wrong type for my windows.

you can shake the window and the lock will unlock itself i try this many times and every time it will do it not good item at all i found it to be.

I love the idea it didn’t quite fit my window but I got it to work it was doing what I wanted. Today I wanted to open the window so I tried to use the key to open the lock and it would not open at all. Nothing I did would fix it. I replaced it with one of the other locks that came in the pack but how long until that one ceases? Made me so mad I couldn’t get it open. What if it was an emergency