Establishments primarily engaged in manufacturing mobile homes and nonresidential mobile buildings These units are generally more than 35 feet long, at least 8 feet wide, do not have facilities for storage of water or waste, and are equipped with wheels. Trailers that are generally 35 feet long or less, 8 feet wide or less, and with self-contained facilities are classified in Industry 3792. Portable wood buildings not equipped with wheels are classified in Industry 2452.

• Buildings, mobile: commercial use
• Mobile buildings for commercial use (e.g., offices, banks)
• Mobile classrooms
• Mobile dwellings
• Mobile homes, except recreational