Review on Ginbel Direct Tension Cupboard Extendable by Anthony Lanka

I've bought dozens of these from all sorts of stores over the years. These slip off within minutes no matter how much time we spend adjusting the tension. As soon as we left the room we heard a crack as they slid down the window! I went to the department store and bought a set just to see if it was an accident or something in the aluminum of our new porch windows (the "curtains" are practically weightless) and the ones at the department store held up just great for an initial adjustment. I think it has something to do with the rubber stoppers on either end causing it to slide down repeatedly and every time. The ones from the box store are still holding on. I didn't even bother to return them. I will use them as garden stakes!