| SHSoutheastern Hardwoods, Inc. | Swannanoa | NC | — | ◇ UNVERIFIED |
| SASouthern Accent Shutters, INC. | Clayton | NC | — | ◇ UNVERIFIED |
| SCSouthern Cabinets and Millwork | Okolona | MS | — | ◇ UNVERIFIED |
| SCSouthern Craftsmen Associates, INC. | Lawrenceville | GA | — | ◇ UNVERIFIED |
| SCSouthern Custom Shutters, INC. | Archdale | NC | — | ◇ UNVERIFIED |
| SFSouthern Forest Products | Appalachia | VA | — | ◇ UNVERIFIED |
| SFSouthern Forest Products LLC | Hiltons | VA | — | ◇ UNVERIFIED |
| SISouthern Indiana Sawmill LLC | Greenville | IN | — | ◇ UNVERIFIED |
| SLSouthern Lumber Company | Quaker City | OH | — | ◇ UNVERIFIED |
| SLSouthern Lumber & Millwork CORP | Charleston | SC | — | ◇ UNVERIFIED |
| SMSouthern Moulding LLC | Kennesaw | GA | — | ◇ UNVERIFIED |
| SNSouthern New Hampshire Fire Wood, LLC | Hudson | NH | — | ◇ UNVERIFIED |
| SPSouthern Pine and Timber Company, INC. | Lithia | FL | — | ◇ UNVERIFIED |
| SPSouthern Pyle Lumber LLC | New Canton | VA | — | ◇ UNVERIFIED |
| SRSouthern Rail | Villa Rica | GA | — | ◇ UNVERIFIED |
| SSSouthern Sawn Lumber Company, LLC | Savannah | GA | — | ◇ UNVERIFIED |
| SSSouthern Solutions, LLC | Nicholasville | KY | — | ◇ UNVERIFIED |
| STSouthern Timber Products LLC | Ruther Glen | VA | — | ◇ UNVERIFIED |
| SWSouthern Wood Chips | Jasper | AL | — | ◇ UNVERIFIED |
| SWSouthern Wood Suppliers, INC. | Oglethorpe | GA | — | ◇ UNVERIFIED |
| SWSouthern Wood Works of Gray, LLC | Gray | GA | — | ◇ UNVERIFIED |
| SFSouth Florida Grading INC | Port Saint Lucie | FL | — | ◇ UNVERIFIED |
| SFSouth Florida Shavings CO. | Lake Worth | FL | — | ◇ UNVERIFIED |
| SWSouthland Wood Recycling, L.l.c. | Valdosta | GA | — | ◇ UNVERIFIED |
| SFSouthn Fork Woodworks LLC | Fort Lauderdale | FL | — | ◇ UNVERIFIED |
| SSSouthport Sawmill | Coos Bay | OR | — | ◇ UNVERIFIED |
| SSSouthport Sawmill | North Bend | OR | — | ◇ UNVERIFIED |
| SLSouthside Lumber Company Incorporated | Emporia | VA | — | ◇ UNVERIFIED |
| SWSouthside Workshop Inc. | Brooklyn | NY | — | ◇ UNVERIFIED |
| SMSouthwest Mill & Lumber | Sun Valley | CA | — | ◇ UNVERIFIED |
| SMSouthwest Mill & Lumber INC | Sun Valley | CA | — | ◇ UNVERIFIED |
| SMSouthwest Moulding | Sun Valley | CA | — | ◇ UNVERIFIED |
| SRSouthwest Renewable Brown Street Mill | Snowflake | AZ | — | ◇ UNVERIFIED |
| SMSpace Manufacturers Corporation | Geneva | NY | — | ◇ UNVERIFIED |
| SBSpann Brothers Lumber CO INC | White Bluff | TN | — | ◇ UNVERIFIED |
| SFSpecialized Fibers | Corning | CA | — | ◇ UNVERIFIED |
| SMSpecialized Milling Corporation | Fontana | CA | — | ◇ UNVERIFIED |
| SWSpecialized Wood Products | Elkhart | IN | — | ◇ UNVERIFIED |
| SBSpecialty Beams, LLC | Heron | MT | — | ◇ UNVERIFIED |
| SHSpecialty Hardwoods of Indiana, INC. (nappanee Plant) | Nappanee | IN | — | ◇ UNVERIFIED |
| SISpecialty, INC. | Homedale | ID | — | ◇ UNVERIFIED |
| SLSpecialty Lumber Company ** Inactive ** | Wilsons Mills | NC | — | ◇ UNVERIFIED |
| SWSpecialty Wood Mouldings, INC. | Rogers | TX | — | ◇ UNVERIFIED |
| SWSpecialty Wood Products | Lodi | CA | — | ◇ UNVERIFIED |
| SWSpecialty Wood Products INC | Monticello (wayne) | KY | — | ◇ UNVERIFIED |
| SWSpecified Woodworking Corporation | Laurel | MD | — | ◇ UNVERIFIED |
| SCSpectrum Custom Design, INC | Desert Hot Springs | CA | — | ◇ UNVERIFIED |
| SESpectrum Energy Georgia, LLC | Adel | GA | — | ◇ UNVERIFIED |
| SLSpencer LLC Monroe | Monroe | WA | — | ◇ UNVERIFIED |
| SCSpencer's Custom Wood LLC | Elgin | TX | — | ◇ UNVERIFIED |
| STSpencer Trucking | Blossvale | NY | — | ◇ UNVERIFIED |
| SWSpigelmyer Wood Products, Incorporated | Lewistown | PA | — | ◇ UNVERIFIED |
| SOSpirit of the Woods, Inc | Jackman | ME | — | ◇ UNVERIFIED |
| SLSpringfield Lumber Products INC | Junction City | OR | — | ◇ UNVERIFIED |
| SGSpring Grove Timber & Mat LLC | Claremont | VA | — | ◇ UNVERIFIED |
| SWSprings Window Fashions, LLC | Grayling | MI | — | ◇ UNVERIFIED |
| SLSprowl Lumber Company Incorporated | Fountain Run | KY | — | ◇ UNVERIFIED |
| SMSpur Millwork INC. | Marion | IA | — | ◇ UNVERIFIED |
| SKSquare K Lumber, LLC | Lewisburg | WV | — | ◇ UNVERIFIED |
| SMSs Manufacturing & Woodworking | Menlo Park | CA | — | ◇ UNVERIFIED |
| SSS & S Sawmill LLC | Peninsula | OH | — | ◇ UNVERIFIED |
| SSSs Stave CO INC | Hopkins County | KY | — | ◇ UNVERIFIED |
| SSS& S Wood Products | Independence | WI | — | ◇ UNVERIFIED |
| SSStaggemeyer Stave CO INC | Caledonia | MN | — | ◇ UNVERIFIED |
| SIStairtek INC | Erlanger | KY | — | ◇ UNVERIFIED |
| SIStan's Industrial Manufacturing LLC | Lyndon Station | WI | — | ◇ UNVERIFIED |
| SCStanco Corporation | Baltimore | MD | — | ◇ UNVERIFIED |
| SHStanfill Hardwood Lumber Company, INC. | Culleoka | TN | — | ◇ UNVERIFIED |
| SSStange Sawmill | Prattville | AL | — | ◇ UNVERIFIED |
| SFStanley Furniture CO - Hackney Street Warehouse | Lexington | NC | — | ◇ UNVERIFIED |
| SMStarke Millwork INC. | Nazareth | PA | — | ◇ UNVERIFIED |
| SLStark Lumber CO | Denver | CO | — | ◇ UNVERIFIED |
| STStarwood Trim INC | Frisco | TX | — | ◇ UNVERIFIED |
| SLStashwood LLC | San Tan Valley | AZ | — | ◇ UNVERIFIED |
| SLState Line Lumber | Tompkinsville | KY | — | ◇ UNVERIFIED |
| SAStavola Asphalt CO INC | Old Bridge Twp | NJ | — | ◇ UNVERIFIED |
| SKSteigerwald's Kitchen & Bath, INC. | Grove City | PA | — | ◇ UNVERIFIED |
| SMSteiner & Mateer INC | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| SCStella-jones Corporation | Goodwater | AL | — | ◇ UNVERIFIED |
| SCStella-jones Corporation | Durant | MS | — | ◇ UNVERIFIED |
| SCStella-jones Corporation Bellingham | Bellingham | WA | — | ◇ UNVERIFIED |
| SPStem Products | Magazine | AL | — | ◇ UNVERIFIED |
| SWStephan Wood Prod INC | Grayling | MI | — | ◇ UNVERIFIED |
| SSStep Solution, LLC | Davie | FL | — | ◇ UNVERIFIED |
| SLSterling Lumber & Supply Company | Goodwater | AL | — | ◇ UNVERIFIED |
 Sterling Site Access Solutions | Lufkin | TX | — | ◇ UNVERIFIED |
| SBSteve Babulas Designer Woodworks | Fort Walton Beach | FL | — | ◇ UNVERIFIED |
| SMSteve Martin Sawmill | Liberty [casey] | KY | — | ◇ UNVERIFIED |
| SFStevens Forest Products | North Logan | UT | — | ◇ UNVERIFIED |
| SRStevenson Rail Siding | Stevenson | AL | — | ◇ UNVERIFIED |
| SASteves and Sons Door Company | San Antonio | TX | — | ◇ UNVERIFIED |
| SCStewart Custom Wood Works, INC. | Alpharetta | GA | — | ◇ UNVERIFIED |
| SLStewart Lumber Company INC | Morristown | TN | — | ◇ UNVERIFIED |
| SPStewarts Point Woodworks LLC | Cazadero | CA | — | ◇ UNVERIFIED |
| SSStice Sawmill, INC. | Bowie | TX | — | ◇ UNVERIFIED |
| SFStillwater Forest Products | Kalispell | MT | — | ◇ UNVERIFIED |
| SLStillwater Lumber, INC. | Charleston | ME | — | ◇ UNVERIFIED |
| SLStimson Lumber - Bonner | Bonner | MT | — | ◇ UNVERIFIED |
| SLStimson Lumber Company Atlas Mill Site | Coeur D Alene | ID | — | ◇ UNVERIFIED |
| SLStimson Lumber Company, Hauser | Post Falls | ID | — | ◇ UNVERIFIED |
