Alvin Book Shelf (Set of 4)Bluewud Alvin Wall Mount Book Shelf is great for Keeping and Organizing Books Space saving design for placing books and novels. Designed in lightweight particle board add literati edge to a room. Simple line design is easy to assemble and install. This space saving design stacks books Vertically in a tower, would be great addition to any room. Space saving design allows for small space friendly storage.