These unique dual posture designed 17-1/2" chair desks are perfect for any school and study environment. The heavy-gauge full tube chrome frame offers maximum support for any user. The durable polypropylene seat features a no-hole shell and concealed fasteners to prevent any mischief. Combo desks come with a metal wire book rack and a laminate top. Each combo chair desk work surface measures 18" x 24" to give every student ample study space.