Tatkraft Spring Bathroom Corner Rack 3 Shelves Free Suction Cups No Drill 12X8,5X20 4 Suction Cups as a Bonus for flawless installation wihtout damaging the wall Easy installation, no drilling, no screws. Dimensions: 12X8,5X20" Modern and safe design: there are no joints, bumps, nor welded seams Nicely blends with almost every bathroom dcor or shower ATTENTION - Will not adhere to unfinished marble, porous or rough surfaces(eg porous painted walls), or across grout lines