Smith System's Planner Three-Student Desk is a durable and stable option for the traditional classroom. The heavy-duty work surface won't sag under the weight of heavy books or equipment. The legs are adjustable to give the work surface a height between 22"H and 32"H in 1" increments. The legs also include leveling glides to provide stability on uneven floors. Optional accessories for these desks include casters and bookboxes. These desks are also compatible with Smith System's Cascade storage system: choose from the Standard Width (SW) tote or the Extra Wide (EW) tote.