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. With the vertical sides up, it is like having a built in bookend. With its contemporary silver gray finish, they are the ideal accent for any living space. Easy to install with no visible connectors or hanging hardware. All hardware included. Overall measures: Large: 17 x 4 x 4". Medium: 13 x 4 x 3.5". Small: 9 x 4 x 3". Danya B. is a registered trademark of Danya B Inc.