Description from Ikea

A simple and practical wall shelf that you can use for storage and as a display shelf. With a wall shelf, you make the most of the wall area, while freeing up space on the floor. The wall shelf has one bevelled and one smooth edge on the long side, so you can choose the side you want facing the room depending on which of the two different styles you like the most. You can cut the wall shelf to exactly the length you need and use GRANHULT bracket to hide the cut edge. Solid wood is natural, renewable and separable material.