The Booked 32" Set of 5 Shelves are designed for use with the 65" or 79" Booked Bookcases to create a wall unit. Pair one set of shelves with two bookcases to span the gap between them creating a wall unit. The shelves are made from MDF with a rich brown laminate finish and steel support that hangs over the edge of the ladder-style shelving supports on the bookcases.