These tough 17-1/2" extra large chair desks have a high-density, polyethylene shell with a 14-gauge frame and 16-gauge rear legs. All of our chair desks feature a large work surface, measuring 18" x 24". These durable chair desks have a laminate work surface and come in a variety of chair colors. Extra large desks offer an extra 2-1/4" space between chair and desk top, for larger students.Ships two per carton. Must order cartons in one size/color. Broken Carton Charge is $10.