Industrial shelters are buildings or structures that are designed to house and protect instrumentation or personnel. Many types of products are available. Examples include booths, cabinets, and coolers. Garages are industrial shelters with large entry doors for machinery or transportation equipment. Mezzanines, intermediate stories between a building’s two main stories, are designed to provide added floor space. Racks and shelving units include cantilever, gravity, reel, pick, drive-in, pallet, multi-tier, bar, flow and storage racks. Walk-in enclosures are used with communications equipment, power generation equipment, fume containment and X-ray equipment. ISO containers are used for the intermodal transport of freight. These industrial shelters are manufactured according to specifications from the International Standards Organization (ISO) and are suitable for multiple transportation methods such as truck and rail, or rail and ship.