🔒 Enhance Home Safety with Defender Security U 9819 Sliding Window Security Lock - Economy Aluminum, Pack of 4 (Silver) Review

What is not visible in their photo, but in mine, is that the product has the wrong type of screw. Usually these locks have flat screws (second photo) that press against the window frame. They came with very sharp, pointy points. They are so sharp that if I keep tightening them they could pierce the window frame (I could see them start to dent and stop). In addition, the contact area with the frame is so small that they do not prevent the window from opening. I think if you are really dedicated…

This is exactly what I was looking for. Mine came in a small package of 4. My window is a sash window with latches. I wanted to jazz it up, so I was looking for something that didn't require installation or tools. All you have to do is insert the clip piece between the window rails, screw in a small piece of screw until it is firmly clamped, and you're done. Mounted two on the window, one on top and one on the bottom. It's almost impossible to open a window with something like this installed…

They will not fit the vertical side rail of my windows. You will need to measure the width of the slat on your window and then look at the width of the open part of the "C" on these clips. If the width of the rail is wider than the "C" spacing on these clamps, you will not be able to install it. The description says 1/8" max thickness, but my splint material is less than 1/8" thick - it just wraps around and creates a channel. I think "thickness" is a bad way to indicate possibilities and they…