LUMBER, PLYWOOD, MILLWORK AND WOOD PANELS (SIC F5031) Establishments, with or without yards, primarily engaged in the wholesale distribution of rough, dressed, and finished lumber (but not timber); plywood (reconstituted wood fiber products); doors, windows, and their frames (all materials); wood fencing; and other wood or metal millwork. SIC 5031 is subdivided in some tables into the following catagories - 1. Lumber - without yard. 2. Lumber - with yard. 3. Plywood, millwork, and wood panels. LUMBER - WITHOUT YARD Establishments primarily engaged in the wholesale distribution of rough, dressed, and finished lumber. These establishments order the goods that are shipped direct from the supplier to the customers, thus eliminating intermediate warehousing. Establishments selling lumber to the general public and known as "retail" in the trade are classified in Retail Trade, Industry 5211. LUMBER - WITH YARD Establishments primarily engaged in the wholesale distribution of rough, dressed, and finished lumber. These establishments perform warehousing and storage functions and usually make deliveries. Establishments selling lumber to the general public and known as "retail" in the trade are classified in Retail Trade, Industry 5211. PLYWOOD, MILLWORK, AND WOOD PANELS Establishments primarily engaged in the wholesale distribution of plywood (hardwood, softwood, and nonwood face); reconstituted wood fiber products; doors, windows, and their frames (all materials); overhead doors; veneer; wood fencing; and other wood or metal millwork. Establishments selling plywood and millwork to the general public and known as "retail" in the trade are classified in Retail Trade, Industry 5211.