H4-Series Solid Plastic Combination Desks offer a durable, easy to clean solution for classrooms. The Artcobell H457S Solid Plastic Combination Desk features a seat height of 17.5". Wire book rack welded to frame provides convenient storage for students. Work surface is constructed of high-impact solid plastic molded into a homogeneous unit by heat and pressure. The work surface includes a molded pencil groove. Seat and back are made of molded melamine thermoset plastic. The seat and back are attached with screws with a nylon retaining washer used between the seat/back and frame. Frame is constructed of 16-gauge tubular steel. Tubing runs from side-to-side and is welded to a 14-gauge back post punched to receive screws. The top support tube is a continuous 14-gauge steel tube. A 16-gauge tube connects the rear leg, top support tube, and front legs. Wire book rack is constructed of #4 steel wire. Only available with navy solid plastic seat.