Okay January 2728

These hooks are very easy to install. We open the window, positioning them, and it's over.
My windows are a little less than 2cm thick. So, I did not have room to put the small piece of foam sold (to protect or thicken the window). A force, my windows might be scratched. For now, nothing anyway.
I've hung tiny rods, those sold with a screw hook, thickness of a wire. It goes well.