This item really sruprised me. I needed something to keep my window open halfway, since my room does not have any other ventilation besides the window. I was really not looking forward to drilling. Then I came across this item. You simply screw one part to the window and paste the retainer to the frame. That's it! At first, I was afraid That the glue would't hold, but it is surprisingly strong!
Pro's + Very easy to install + Includes alcohol swab for cleaning your window frame + Glue is very strong and Easily holds a big, heavy window (mine is 1 by 2 meters)
