Tough, durable shipping case lined with 2" of foam. Usable interior space is 40" x 20" x 22". Made from 3/8" birch plywood with ABS plastic laminated on both sides for superior strength. Designed to protect your gear and endure the rigors of shipment over and over again. Features (4) 3.5" casters, extruded aluminum angle trim, deep tongue and groove closure between lid and case, riveted stainless steel hinge, plated steel recessed handles and latches. Lockable, requires padlock with up to 1/4" shank (not included).