Strong and Durable Adhesive Shelf: Only for tile (non-cracked), glass, mirror, polished metal, stainless steel and acrylic. Do Not apply to grout lines. Not for use on painted/drywall, wood, wallpaper or any other rough/cracked surface. Please install carefully according to the instructions and pictures, if there is any problem during the first installation, you can re-install with a replacement adhesive Large Capacity Acrylic Bathroom Shelves: This Large Size Acrylic Adhesive Organizer features a sturdy acrylic structure, measures 12.8"L x 3.6"W x 3.3"H, and can hold up to 15 lbs. It has a large capacity. Note: This Clear Acrylic Shelf has a large capacity and may not be suitable for small storage cabinets. Please Check the dimensions carefully and compare them with the measurements before placing an order No Drilling for Easy Installing Stick on Shelf: This Clear Wall Shelf With Strong Sticky Self-Adhesive Tape,No Holes Need to Be Drilled At The Wall, Very Easy to Install,just Find