| SPShelton's Pallet Company | Oxford | PA | — | ◇ UNVERIFIED |
| SPShockley Pallet Company | Snow Hill | MD | — | ◇ UNVERIFIED |
| SShredcase | Indianapolis | IN | — | ◇ UNVERIFIED |
 Sierra Pacific Industries | Marysville | CA | — | ◇ UNVERIFIED |
| SPSierra Pallet INC. | Reno | NV | — | ◇ UNVERIFIED |
| SSSignature Seating INC | Hickory | NC | — | ◇ UNVERIFIED |
| SWSimcoe Wood Products INC. | Cullman | AL | — | ◇ UNVERIFIED |
| SCSimpson County Wood Products CO | Franklin | KY | — | ◇ UNVERIFIED |
| SSSimpson Strong Tie (denver) | Denver | CO | — | ◇ UNVERIFIED |
| SRSinclair & Rush | Kirkwood | MO | — | ◇ UNVERIFIED |
| SESinomax East, INC. | La Vergne | TN | — | ◇ UNVERIFIED |
| SPSkidboy Pallets | Green Bay | WI | — | ◇ UNVERIFIED |
| SCSkids, Crates, & Pallets Incorporated | Hortonville | WI | — | ◇ UNVERIFIED |
| SPSk Pallet INC. | York | PA | — | ◇ UNVERIFIED |
| SSSl Sawmill | Leroy | MI | — | ◇ UNVERIFIED |
| SCSmi CO. | Cresco | IA | — | ◇ UNVERIFIED |
| SSmico | Cresco | IA | — | ◇ UNVERIFIED |
| STSmithers-oasis Taexas | Waxahachie | TX | — | ◇ UNVERIFIED |
| SPSmitty's Pallet Service | West Sacramento | CA | — | ◇ UNVERIFIED |
| SPS&m Products | Blakeslee | OH | — | ◇ UNVERIFIED |
| SMSna Manufacturing, LLC | Acworth | GA | — | ◇ UNVERIFIED |
| SNS & N Pallets, INC. | East Sparta | OH | — | ◇ UNVERIFIED |
| SPSnyder Paper Corporation | High Point | NC | — | ◇ UNVERIFIED |
| SFSolimide Foams Div of Boyd Corporation | Magnolia | AR | — | ◇ UNVERIFIED |
| SFSolution First | La Fayette | GA | — | ◇ UNVERIFIED |
 Sonoco Products Company - Tiger Launch | Hartselle | AL | — | ◇ UNVERIFIED |
| SRSonoco Reels | Hartselle | AL | — | ◇ UNVERIFIED |
| SPSonora Pallets | Los Angeles | CA | — | ◇ UNVERIFIED |
| SMSooner Magnetics | Choctaw | OK | — | ◇ UNVERIFIED |
 Sound Manufacturing INC | Kent | WA | — | ◇ UNVERIFIED |
| SWSound Wood Properties LLC | Chehalis | WA | — | ◇ UNVERIFIED |
| SPSoutheast Pallet and Box | Montgomery | AL | — | ◇ UNVERIFIED |
| SPSoutheast Pallet Recycling CO | Louisville | KY | — | ◇ UNVERIFIED |
| SWSoutheast Wood Products INC. Dba Ramer Wood Products | Ramer | TN | — | ◇ UNVERIFIED |
| SCSouthern California Crating, INC. Dba S.c. Crates | Orange | CA | — | ◇ UNVERIFIED |
| SCSouthern Crates, INC. | Pine Mt Valley | GA | — | ◇ UNVERIFIED |
| SMSouthern Milling & Lumber, INC | Lakeland | FL | — | ◇ UNVERIFIED |
| SOSouthern Ohio Lumber LLC | Milladore | WI | — | ◇ UNVERIFIED |
| SPSouthern Packaging Solutions, INC. | Adel | GA | — | ◇ UNVERIFIED |
| STSouthern Timber Extracts Manufacturing Co., INC. | Prichard | AL | — | ◇ UNVERIFIED |
| SCSouthland Container Group | Spartanburg | SC | — | ◇ UNVERIFIED |
| SMSouthland Manufacturing CO INC | Bowling Green | KY | — | ◇ UNVERIFIED |
| SPSouthland Pallet Company | Eutaw | AL | — | ◇ UNVERIFIED |
| SPSouthside Pallets, LLC | Memphis | TN | — | ◇ UNVERIFIED |
| STSouth Texas Pallets | Alamo | TX | — | ◇ UNVERIFIED |
| SFSouthwestern Foam Technologies | Belton | TX | — | ◇ UNVERIFIED |
| SFSouthwestern Foam Technologies, INC. | Flower Mound | TX | — | ◇ UNVERIFIED |
| SPSouthwest Pallets INC | Marshall | MN | — | ◇ UNVERIFIED |
| SMSouthwind Manufacturing, LLC | Ocala | FL | — | ◇ UNVERIFIED |
| SLSouthwood Lumber & Pallet INC | Orrville | OH | — | ◇ UNVERIFIED |
