Classic metal book box, adjustable for students of all ages. MODEL SHAPE HEIGHT DESK 9500 22''-29'' Adj 18'' x 24'' 9550 Full Chrome Legs 22''-29'' Adj 18'' x 24'' 9506 22''-29'' Adj 20'' x 26''OPTIONSPermaTuff EdgePlywood Core Work SurfaceSolid Plastic Work SurfaceNon-Skid GlidesQ-Ball GlidesBlack Edge