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 Millwork20,182
503100Lumber, plywood, and millwork2,792
50310000Lumber, plywood, and millwork2,792
503101Building materials, exterior1,391
50310100Building materials, exterior1,284
50310101Fencing, wood61
50310102Shingles, wood15
50310103Siding, wood16
50310104Trim, sheet metal15
503102Building materials, interior1,029
50310200Building materials, interior420
50310201Enameled tileboard3
50310202Molding, all materials169
50310203Paneling, wood25
503103Doors and windows9,961
50310300Doors and windows1,524
50310301Door frames, all materials170
50310302Doors, combination, screen-storm24
50310303Doors, garage435
50310304Doors, nec696
50310305Metal doors, sash and trim105
50310306Window frames, all materials51
50310308Skylights, all materials43
503199Lumber, plywood, and millwork, nec5,009
50319901Composite board products, woodboard68
50319903Kitchen cabinets1,542
50319904Lumber: rough, dressed, and finished1,275
50319905Medium density fiberboard5
50319907Pallets, wood260
50319910Structural assemblies, prefabricated: wood50