Industry: 5031—Lumber, Plywood, Millwork, and Wood Panels
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 and windows and their frames (all materials); wood fencing; and other wood or metal millwork.

Composite board products, wood-based—wholesalePaneling wood—wholesale
Door frames, all materials—wholesaleParticleboard—wholesale
Enameled tileboard (hardboard)—wholesalePlywood—wholesale
Fencing, wood—wholesaleShingles wood—wholesale
Hardboard—wholesaleStructural assemblies prefabricated wood—wholesale
Kitchen cabinets to be built in—wholesaleVeneer—wholesale
Lumber rough, dressed, and finished—wholesaleWallboard—wholesale
Medium density fiberboard—wholesaleWindow frames all materials—wholesale
Metal doors, sash and trim—wholesaleWindows and doors—wholesale
Millwork—wholesaleWood siding—wholesale
Molding all materials—wholesale
Codes Titles Number of US Businesses
5031Lumber, Plywood, and Millwork20,673
503100Lumber, plywood, and millwork1,915
50310000Lumber, plywood, and millwork1,915
503101Building materials, exterior1,622
50310100Building materials, exterior1,513
50310101Fencing, wood61
50310102Shingles, wood14
50310103Siding, wood17
50310104Trim, sheet metal17
503102Building materials, interior1,036
50310200Building materials, interior425
50310201Enameled tileboard3
50310202Molding, all materials172
50310203Paneling, wood24
503103Doors and windows10,410
50310300Doors and windows1,070
50310301Door frames, all materials173
50310302Doors, combination, screen-storm23
50310303Doors, garage447
50310304Doors, nec727
50310305Metal doors, sash and trim108
50310306Window frames, all materials53
50310308Skylights, all materials42
503199Lumber, plywood, and millwork, nec5,690
50319901Composite board products, woodboard66
50319903Kitchen cabinets1,554
50319904Lumber: rough, dressed, and finished1,875
50319905Medium density fiberboard5
50319907Pallets, wood269
50319910Structural assemblies, prefabricated: wood50