This is a cheaply made product.  The back panel is basically cardboard.  The particle board for the sides and shelves was very easily damaged just trying to assemble the book shelf.  The hardware has plastic housing....isn't even metal.  I order a lot of these assemble yourself shelves and they at least have durable metal hardware.  There are four shelves.  However, one of the shelves must be placed in the middle of the entire unit and is not movable.  This means that you have 3 other adjustable shelves.  Because of the one shelf placed in the middle, you will not ever be able to have evenly placed shelves.  You will have 2 squeezed in one section and 1 with lots of room in the other section.  There is no way it will ever look like the picture with 4 evenly spaced shelves.    I wouldn't buy again but will keep because hassle to return and repack is too much.