| TRTurtle River Wood Treating | Port Hope Township | MN | — | ◇ UNVERIFIED |
| UGUfp Gainesville, LLC (dba Robbins Wood Treating) | Gainesville | GA | — | ◇ UNVERIFIED |
| UNUfp Nappanee, LLC Dba Quality Hardwood | Nappanee | IN | — | ◇ UNVERIFIED |
| URUfp Rockwell, LLC Dba Robbins Manufacturing | Rockwell | NC | — | ◇ UNVERIFIED |
| UTUfp Tampa, LLC Dba Robbins Manufacturing | Tampa | FL | — | ◇ UNVERIFIED |
| UCUltralumber CORP | Caguas | PR | — | ◇ UNVERIFIED |
| UIUniek, INC. | Greenwood | MS | — | ◇ UNVERIFIED |
| UCUnion Camp CORP Dba Thomas Treating CO | Folkston | GA | — | ◇ UNVERIFIED |
| UTUnion Timber CORP | Homerville | GA | — | ◇ UNVERIFIED |
| UFUniversal Forest Prod Eastern CO | Gordon | PA | — | ◇ UNVERIFIED |
| UFUniversal Forest Products Blanchester LLC | Blanchester | OH | — | ◇ UNVERIFIED |
| UFUniversal Forest Products Eastern CO INC | North East | MD | — | ◇ UNVERIFIED |
| UFUniversal Forest Products Eastern Div in (former) | Janesville | WI | — | ◇ UNVERIFIED |
| UFUniversal Forest Products Eastern Division INC | Lodi | OH | — | ◇ UNVERIFIED |
| UFUniversal Forest Products Indiana LP | Westville | IN | — | ◇ UNVERIFIED |
| UFUniversal Forest Products Southwest CO INC | Slater | MO | — | ◇ UNVERIFIED |
| UFUniversal Forest Products Western Div INC | Silsbee | TX | — | ◇ UNVERIFIED |
| UFUniversal Forest Products Western Division | Silsbee | TX | — | ◇ UNVERIFIED |
| UAUrban Accessories Woodinville | Woodinville | WA | — | ◇ UNVERIFIED |
| URUrethane Roller Specialists | Eureka | MO | — | ◇ UNVERIFIED |
| UWUSA Wood Concepts, INC. | New Vineyard | ME | — | ◇ UNVERIFIED |
| UBU.s. Bureau of Indian Affairs Uintah & Ouray Agency | Fort Duchesne | UT | — | ◇ UNVERIFIED |
| UCUS Cooling Tower | Plainview | TX | — | ◇ UNVERIFIED |
| USU S Fence Incorporated Treating Division | Bulls Gap | TN | — | ◇ UNVERIFIED |
| UFUS Forest Industries INC | South Fork | CO | — | ◇ UNVERIFIED |
| UWUtah Wood Preserving | Woods Cross | UT | — | ◇ UNVERIFIED |
| VFValley Forest Wood Products LLC | Marcell | MN | — | ◇ UNVERIFIED |
| VLValley Lumber CO INC | Hackleburg | AL | — | ◇ UNVERIFIED |
| VWValley Wood Preserving, INC. | Turlock | CA | — | ◇ UNVERIFIED |
| VMVan Matre Lumber CO | Fontana | CA | — | ◇ UNVERIFIED |
| VPVermont Precision Woodworks | Morrisville | VT | — | ◇ UNVERIFIED |
| VCVico Construction Corporation - Portable | Chesapeake | VA | — | ◇ UNVERIFIED |
| VEVintage Editions, INC. | Taylorsville | NC | — | ◇ UNVERIFIED |
| VSVisteon Systems LLC | Connersville | IN | — | ◇ UNVERIFIED |
| VCVulcan Construction Materials LLC | Manteno | IL | — | ◇ UNVERIFIED |
| WRWagner Rack INC | Clifton | NJ | — | ◇ UNVERIFIED |
| WWWalker Wood Preserving INC | Livingston | TX | — | ◇ UNVERIFIED |
| WSWard Shavings, LLC | Murfreesboro | AR | — | ◇ UNVERIFIED |
| WRWare Rite Distributors INC | East Bridgewater | MA | — | ◇ UNVERIFIED |
| WMWdw Management Company LLC | Jefferson City | TN | — | ◇ UNVERIFIED |
| WSWebb & Sons INC | Sherburne | NY | — | ◇ UNVERIFIED |
| WLWeekley Lumber | Rockledge | FL | — | ◇ UNVERIFIED |
| WTWeisenberger Tie and Lumber CO. INC. | Marathon | WI | — | ◇ UNVERIFIED |
| WCWeiss Cascade | Centralia | WA | — | ◇ UNVERIFIED |
| WPWeiss Prestaining INC | La Porte | IN | — | ◇ UNVERIFIED |
| WBWest Branch Wood Treating INC | West Branch | MI | — | ◇ UNVERIFIED |
| WBWestern Bee Supplies, INC. | Polson | MT | — | ◇ UNVERIFIED |
| WEWestern Excelsior - Mancos | Mancos | CO | — | ◇ UNVERIFIED |
| WTWestern Timber Products INC Weiser | Weiser | ID | — | ◇ UNVERIFIED |
| WCWestrock Cp, LLC | Newville | AL | — | ◇ UNVERIFIED |
| WCWestrock Cp LLC – Cascade Chip Mill | Cascade | VA | — | ◇ UNVERIFIED |
| WCWeyerhaeuser CO Detroit Csc | Westland | MI | — | ◇ UNVERIFIED |
| WHWeyerhaeuser Hardwood Sedro Woolley | Sedro Woolley | WA | — | ◇ UNVERIFIED |
| WNWeyerhaeuser Nr Company | Lebanon | OR | — | ◇ UNVERIFIED |
| WSWeyerhaeuser Simsboro Ewp | Simsboro | LA | — | ◇ UNVERIFIED |
| WHWf Harris and Sons Wood Preserving (hsi No. 10219) | Thomaston | GA | — | ◇ UNVERIFIED |
| WPWfnc1 Project Us, LLC - Sims **inactive** | Sims | NC | — | ◇ UNVERIFIED |
| WIWfp, INC | Orange Park | FL | — | ◇ UNVERIFIED |
| WIWfp, INC. | Green Cove Springs | FL | — | ◇ UNVERIFIED |
| WCWheeler Consolidated INC | Rock Island | IL | — | ◇ UNVERIFIED |
| WFWhitehall Furniture LLC | Owensboro | KY | — | ◇ UNVERIFIED |
| WMWhitley Manufacturing Incorporated | Midland | NC | — | ◇ UNVERIFIED |
| WCWhitpain Clnr Svc | Norristown | PA | — | ◇ UNVERIFIED |
| WPWidner Product Finishing CO INC | Rogers | TX | — | ◇ UNVERIFIED |
| WSWieland & Sons Lumber CO | Winthrop | IA | — | ◇ UNVERIFIED |
| WLWildwood Lamp CO | Rocky Mount | NC | — | ◇ UNVERIFIED |
| WSWilkie Sanderson | Sauk Rapids | MN | — | ◇ UNVERIFIED |
| WPWinona Post Company | Winona | MO | — | ◇ UNVERIFIED |
| WJW J Smith Wood Preserving CO | Denison | TX | — | ◇ UNVERIFIED |
| WDWnc Dry Kiln, INC. - Marion | Marion | NC | — | ◇ UNVERIFIED |
| WMWolfcraft Mfg INC | Marshfield | WI | — | ◇ UNVERIFIED |
| WIWoodcraft Industries, Incorporated | Bellefonte | PA | — | ◇ UNVERIFIED |
| WIWoodgrain, INC. - Dba Natures By Woodgrain | Fallston | NC | — | ◇ UNVERIFIED |
| WIWoodline Incorporated | Thomasville | NC | — | ◇ UNVERIFIED |
| WMWood Mart of Va Company | Chester | VA | — | ◇ UNVERIFIED |
| WPWood Parts International | Elkhart | IN | — | ◇ UNVERIFIED |
| WPWoodpecker Partners, LLC | North Wilkesboro | NC | — | ◇ UNVERIFIED |
| WPWood Protection LP | Houston | TX | — | ◇ UNVERIFIED |
| WRWood Recovery Systems INC | Longmont | CO | — | ◇ UNVERIFIED |
| WSWood Shop the | Nashville | TN | — | ◇ UNVERIFIED |
| WWWoodstone Wood Pellet Manufacturing Facility | South Glens Falls | NY | — | ◇ UNVERIFIED |
| WBWoodtone Building Products | Woodinville | WA | — | ◇ UNVERIFIED |
| WTWood Treatment Co., INC. | Mount Sterling | KY | — | ◇ UNVERIFIED |
| WWWood Wizzard | Hamburg | NY | — | ◇ UNVERIFIED |
| WBWoodworking By Design | Hoagland | IN | — | ◇ UNVERIFIED |
| WOWoodwork of Mid-america | Bowling Green | KY | — | ◇ UNVERIFIED |
| WIWoodwrights, INC | Bridgeport | CT | — | ◇ UNVERIFIED |
| WCWycoff CO West Seattle | Seattle | WA | — | ◇ UNVERIFIED |
| YWYard Works Mulching and Recycling Facility | Moseley | VA | — | ◇ UNVERIFIED |
| ZIZepsa Industries, Incorporated | Charlotte | NC | — | ◇ UNVERIFIED |
| ZBZilkha Biomass Monticello LLC | Monticello | AR | — | ◇ UNVERIFIED |
| ZIZytech INC | Pine Grove | LA | — | ◇ UNVERIFIED |
| 0C00060302-60302p Culpeper of Ramseur LLC | Ramseur | NC | 20–99 | ◐ LIKELY ACTIVE |
| 0J00060302-60302r Jefferson Homebuilders Culpeper Wood | Athens | NY | 20–99 | ◐ LIKELY ACTIVE |
| 0C00060302-60302s Culpeper of Leola, LLC | Leola | PA | 100–499 | ◐ LIKELY ACTIVE |
| 0C00060302-60302v Culpeper of Fruitland, LLC | Eden | MD | 20–99 | ◐ LIKELY ACTIVE |
| 0C00060302-60302x Culpeper of Belchertown, LLC | Belchertown | MA | 20–99 | ◐ LIKELY ACTIVE |
| 1F12 for Life | Carrollton | GA | 100–499 | ◐ LIKELY ACTIVE |
| 330Schofield | Scholfield | WI | 20–99 | ◐ LIKELY ACTIVE |
| EC"4005 - Eau Claire Treating Plant" | Eau Claire | WI | 20–99 | ◐ LIKELY ACTIVE |
