CARPENTRY WORK SPECIAL TRADE CONTRACTORS (Industry 1751) Establishments classified in this industry are primarily engaged in carpentry and framing work and installation involving post frame construction of prefabricated windows and doors (except revolving doors). Ship joinery contractors are also included in this industry. Establishments primarily engaged in building custom cabinets for individuals in a ship are classified in retail trade, industry 5712. For additional examples, refer to the Standard Industrial Classification Manual: 1987 (SIC) published by the Office of Management and Budget, Executive Office of the President. During 1992, the establishments with paid employees classified in this industry accounted for $13.0 billion in total dollar value of business. Of this amount, $12.9 billion were for the value of construction work. These establishments paid out $4.5 billion for materials, components, and supplies and $1.5 billion for construction work subcontracted to others. Costs for selected power, fuels, and lubricants for the industry were $204 million. Value added for 1992 was $6.8 billion. There were 38,210 establishments with total employment averaging 177,601 during the year. Total payroll for 1992 was $3.5 billion. Larger establishments with 20 employees or more, while representing only 3 percent of the total number of employer establishments in this industry, accounted for 32 percent of all business done.