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—wholesale | Paneling wood—wholesale |
| Door frames, all materials—wholesale | Particleboard—wholesale |
| Enameled tileboard (hardboard)—wholesale | Plywood—wholesale |
| Fencing, wood—wholesale | Shingles wood—wholesale |
| Hardboard—wholesale | Structural assemblies prefabricated wood—wholesale |
| Kitchen cabinets to be built in—wholesale | Veneer—wholesale |
| Lumber rough, dressed, and finished—wholesale | Wallboard—wholesale |
| Medium density fiberboard—wholesale | Window frames all materials—wholesale |
| Metal doors, sash and trim—wholesale | Windows and doors—wholesale |
| Millwork—wholesale | Wood siding—wholesale |
| Molding all materials—wholesale | |
| Codes |
Titles | Total Marketable US Businesses |
| 50310000 | Lumber, plywood, and millwork | 1,465 |
| 50310100 | Building materials, exterior | 1,283 |
| 50310101 | Fencing, wood | 55 |
| 50310102 | Shingles, wood | 10 |
| 50310103 | Siding, wood | 18 |
| 50310104 | Trim, sheet metal | 18 |
| 50310200 | Building materials, interior | 374 |
| 50310201 | Enameled tileboard | 4 |
| 50310202 | Molding, all materials | 112 |
| 50310203 | Paneling, wood | 21 |
| 50310204 | Veneer | 111 |
| 50310205 | Wallboard | 179 |
| 50310300 | Doors and windows | 468 |
| 50310301 | Door frames, all materials | 126 |
| 50310302 | Doors, combination, screen-storm | 22 |
| 50310303 | Doors, garage | 269 |
| 50310304 | Doors, nec | 565 |
| 50310305 | Metal doors, sash and trim | 87 |
| 50310306 | Window frames, all materials | 39 |
| 50310307 | Windows | 10,088 |
| 50310308 | Skylights, all materials | 36 |
| 50319901 | Composite board products, woodboard | 61 |
| 50319902 | Hardboard | 159 |
| 50319903 | Kitchen cabinets | 1,240 |
| 50319904 | Lumber: rough, dressed, and finished | 2,840 |
| 50319905 | Medium density fiberboard | 6 |
| 50319906 | Millwork | 1,242 |
| 50319907 | Pallets, wood | 257 |
| 50319908 | Particleboard | 0 |
| 50319909 | Plywood | 122 |
| 50319910 | Structural assemblies, prefabricated: wood | 44 |
