The suction cups do not take and I've followed the installation instructions and supported like crazy on the suction cups to remove the air. I tried 3 different wall materials and, each time, it does not even take into the day. The classic sucker bottom can not join because the support legs to the distributor of the wall are too long. I have thought of putting the screws, but it's not going to work either, because the whole thing is going to be wobbly. I refer.