Never have a boring wall in your house again with this award winning floating shelf from Umbra, you can transform any wall, in any room, into a custom library for storing and displaying your favorite books. Introducing Conceal Bookshelf by Umbra. The Conceal wall shelf is a floating bookcase that become invisible once stacked with books. Attach it to your wall (using the included mounting hardware) then slide the sturdy metal shelf between the back cover and pages of a book to create a base for additional books to be stacked upon. Once youve secured the back cover into the holding lips, place additional books on top until the sturdy metal shelf is hidden from view. Your books will appear to be floating on the wall! Alternate Use: In a bedroom, or other tiny space that is too small for bulky tables you can fasten Conceal to the wall and instantly create a small shelf to sit items upon - such as collectables or your cellphone. Details: Conceal Book Shelf (Small) measures 5 x 5 x 5 inches and holds up to 15 lbs. Conceal Book Shelf (Large) measures 5 x 7 x 6 inches and holds up to 20 lbs. For a truly unique, space-saving small wall shelf order the Conceal small shelf for wall today! About Umbra: A global product design company providing original, modern, casual and functional design for the home.