Danya B. set of 3 Nesting "U" Shelves makes space utilization efficient is perfect for displaying your favorite books， collectibles， photos， toys， awards， CD's， videos， decorative items and more. They can be hung with the vertical sides either up or down， according to the effect you want to create. Overall measures- large- 17"L x 4"H x 4"D， medium- 13"L x 4"D x 3.5"H， small- 9"L x 4"D x 3"H Modern design enhances any wall without sacrificing floor space Three independent shelves to be affixed at the required height No assembly required Can be hung with the vertical sides either up or down No visible hanging hardware， all hardware included Laminated MDF Wipe Clean Imported