| PPPan Pacific Products Dominance Ind | Broken Bow | OK | — | ◇ UNVERIFIED |
| PFPenick Forest Products INC | Macon | MS | — | ◇ UNVERIFIED |
| PTPowe Timber Company, Dba American Wood | Richton | MS | — | ◇ UNVERIFIED |
| PLProwood LLC Plant Fairless Hills Facility | Fairless Hills | PA | — | ◇ UNVERIFIED |
| PRPuerto Rico Wood Treating | San Juan | PR | — | ◇ UNVERIFIED |
| QWQuality Wood Treating Company Incorporated | Fombell | PA | — | ◇ UNVERIFIED |
| RMRobbins Manufacturing CO | Tampa | FL | — | ◇ UNVERIFIED |
| RWRobbins Wood Preserving | Thomaston | GA | — | ◇ UNVERIFIED |
| SISentinel Industries, INC. | Calico Rock | AR | — | ◇ UNVERIFIED |
| SLShearhouse Lumber CO | Pooler | GA | — | ◇ UNVERIFIED |
| SASouth Atlantic Wood Preservers INC. | Elizabeth City | NC | — | ◇ UNVERIFIED |
| SLSouth-east Lumber CO | Kernersville | NC | — | ◇ UNVERIFIED |
| SWSoutheast Wood | Nauvoo | AL | — | ◇ UNVERIFIED |
| SWSoutheast Wood | Pleasant Hill | MO | — | ◇ UNVERIFIED |
| SWSoutheast Wood INC | Rockledge | FL | — | ◇ UNVERIFIED |
| SWSoutheast Wood Treating Incorporated | Richmond | IN | — | ◇ UNVERIFIED |
| SWSouthern Wood Treating, INC. | Guayanilla | PR | — | ◇ UNVERIFIED |
| SWSteinkamp Warehouse INC | Huntingburg | IN | — | ◇ UNVERIFIED |
| SCStella-jones CORP | Silver Springs | NV | — | ◇ UNVERIFIED |
| SCStella-jones CORP | Dubois | PA | — | ◇ UNVERIFIED |
| SCStella-jones CORP | Bangor | WI | — | ◇ UNVERIFIED |
| SCStella-jones CORP | Russellville | AR | — | ◇ UNVERIFIED |
| SCStella-jones CORP | Alexandria | LA | — | ◇ UNVERIFIED |
| SCStella-jones CORP - Brierfield Facility | Brierfield | AL | — | ◇ UNVERIFIED |
| SJStella Jones Corp/mcalisterville | Mc Alisterville | PA | — | ◇ UNVERIFIED |
| SJStella Jones Corporation | Arlington | WA | — | ◇ UNVERIFIED |
| SCStella-jones Corporation | Wiggins | MS | — | ◇ UNVERIFIED |
| SCStella-jones Corporation | Cordele | GA | — | ◇ UNVERIFIED |
| SCStella-jones Corporation-clanton Division | Clanton | AL | — | ◇ UNVERIFIED |
| SCStella-jones Corporation - Noble Facility | Converse | LA | — | ◇ UNVERIFIED |
| SJStella - Jones Corporation - Rison | Rison | AR | — | ◇ UNVERIFIED |
| SWStraits Wood Treating | Bay City | MI | — | ◇ UNVERIFIED |
| SFSunbelt Forest Products | Louisville | AL | — | ◇ UNVERIFIED |
| SFSunbelt Forest Products CORP | Bartow | FL | — | ◇ UNVERIFIED |
| SFSunbelt Forest Products, INC. | Mosheim | TN | — | ◇ UNVERIFIED |
| STSuperior Tie & Timber CO | Vivian | LA | — | ◇ UNVERIFIED |
| TWThunderbolt Wood Treating | Riverbank | CA | — | ◇ UNVERIFIED |
| TOTso of Virginia | Rocky Mount | VA | — | ◇ UNVERIFIED |
| UAUfp Auburndale, LLC | Auburndale | FL | — | ◇ UNVERIFIED |
| UGUfp Granger LLC | Granger | IN | — | ◇ UNVERIFIED |
| UMUfp Moultrie, LLC | Moultrie | GA | — | ◇ UNVERIFIED |
| URUfp Ranson LLC | Ranson | WV | — | ◇ UNVERIFIED |
| USUfp Salisbury, LLC | Salisbury | NC | — | ◇ UNVERIFIED |
| USUfp Stockertown LLC | Stockertown | PA | — | ◇ UNVERIFIED |
| UUUfp Union City, LLC | Union City | GA | — | ◇ UNVERIFIED |
| UFU F P Western Division INC | Windsor | CO | — | ◇ UNVERIFIED |
| UWUnited Wood Treating CO Incorporated | Whitmire | SC | — | ◇ UNVERIFIED |
| UFUniversal Forest Products | Belchertown | MA | — | ◇ UNVERIFIED |
| WVWabash Valley Wood Protection Incorporated | Vincennes | IN | — | ◇ UNVERIFIED |
| WMWauna Mill | Clatskanie | OR | — | ◇ UNVERIFIED |
