2 Shelf Maximizer to maximize space in limited areas. Available with 1/4" Black ABS or 3/8" Clear Acrylic Sides. Back and Base are open to provide air circulation. Shelves are constructed of Steel which is coated with a baked-on enamel and are adjustable to 2 different angles. Includes price molding on the front of the shelves. See Page 123 of our 2011 catalog for details.