In this Trailing Spiral Bookshelf books curve to the shape of the shelf and it is made of aluminium. This shelf has a dual purpose in that it both decorates a room, as well as holds books. The Trailing Spiral Bookshelf is sturdy and easily handles being completely full of books, it holds 200-275 books and its dimensions are 8′ wide, 5′ tall and 0,8″ deep.