Molded PE Rack Case; Front, Rear Rails; 6U; 19" Deep; Locking, Pull Handle, Recessed Wheels Lightweight Polyethylene Construction; Threaded, Field Replaceable 7mm Zinc-Plated Steel Rack Rails; Front & Rear Rack Rails; Heavy-Duty Twist Latches; Comfortable recessed side handles; Rugged pull-out handle; Roller blade-style wheels; Locking lid.