The deep design is ideal for most PA/DJ equipment, such as amplifiers, effects, cables, etc. These 6-space Rack Cases are made of lightweight ABS with aluminum rails and finishes, reinforced handles, intended for transporting your equipment. These racks offer excellent protection for equipment during transportation. The shallow design is great for smaller equipment such as wireless microphones, preamps, etc. These 6U racks are 17 inches deep, standard 19-inch mounting rails, spring-loaded handles, heavy-duty butterfly latches and rack screws are included!