Safco AlphaBetter Desk with Book Box. Phenolic (laminated plastic) desktops are durable and chemical, fire and impact resistant. 42"H x 36"W x 24"D. Steel frame with black powder coat finish for durability,premium top. Desk adjusts from to high; adjustable in 1 " increments. Desk designed for students in grades 3-12. Lower shelf provides additional storage for supplies and books. Patented Swinging Pendulum Footrest Bar allows natural movement while standing at desk. Includes additional book box. Patent nos. 8061278 and 8291833.