This floating bookshelf becomes invisible as it is hidden behind books that are stacked on it. A really clever design, I don’t think there is a cooler way of storing your books than using the Umbra Conceal. To create this stunning visual and gravity defying effect you slide the shelf in-between the cover of the first book and then stack the rest of the book on top. It is recommended you use a hardback book for the first book but then if you prefer you can place paperbacks on top of this one. The shelves are made from strong metal and in a powder coated finish, the shelve is durable and robust. It is available in 2 sizes small & large and in 2 colour options silver nickel and matt white. Wall mounting hardware kit is also included. Designed by Mior Lior the product was a 2006 Pratt award winner. Umbra works with schools like Pratt to developed mentor programs for future designers. Royalties from the umbra Conceal bookshelves go to supporting the program, students and schools. Dimensions: Small. Length 14cm. Height 13.3cm. Width 12.7cm. Max Loading Weight 6.8kg. Max stack Height 41cm. Maximum Book Depth 20cm Large. Length 17cm. Height 14cm. Width 18cm. Max Loading Weight 9kg. Max Book Depth 25.4cm.