The 4 RU SKB iSeries Injection-Molded 13" Fly Rack is a rolling flight- and shipping-friendly rack case designed to house rack-mountable equipment for musicians and audio engineers on tour and in studios, live stage applications, and mobile-recording setups. It features threaded rails in the front and back with a 13" rail-to-rail depth. TSA-compliant, trigger-release latches provide dependable closure and can be secured with a padlock (available separately).

The polypropylene copolymer resin case is strong, waterproof, and resistant to dirt, dust, corrosion, and more. Its automatic pressure-equalization valve prevents damage caused by drastic changes in air pressure. The molded-in hinges contribute to the case's sleek appearance and add additional protection. A one-touch pull handle, molded cushion-grip carrying handles, and in-line rolling wheels deliver versatile and effective transport methods.