You can probably hold all your studio rack gear neatly and securely in just one Middle Atlantic Rack Accessories RK-12 12-Space Rack cabinets. Middle Atlantic equipment racks are solidly built, 16″ deep and feature chip-resistant black laminate finish. Rack rails are pre installed, and assembly takes just a few minutes with hardware and tools included. Hold your studio rack gear neatly and securely in the Middle Atlantic RK-12 12U audio rack cabinet. Middle Atlantic equipment racks are solidly built, 16″ deep and feature chip-resistant black laminate finish. Rack rails are preinstalled, and assembly takes just a few minutes with hardware and tools included.