| SBSentinel Building Systems | Albion | NE | — | ◇ UNVERIFIED |
| SSShamrock Steel Sales, INC. | Odessa | TX | — | ◇ UNVERIFIED |
| SMSharp Machining & Polishing, Inc. | Kenosha | WI | — | ◇ UNVERIFIED |
| SDShed Depot & Shed Guy Services INC. | Ocala | FL | — | ◇ UNVERIFIED |
| SSShelter Solutions LLC | Albuquerque | NM | — | ◇ UNVERIFIED |
| SSSinger Safety Company | Chicago | IL | — | ◇ UNVERIFIED |
 Skyline Steel, INC. | Chandler | AZ | — | ◇ UNVERIFIED |
 Sky Rider Equipment CO INC | Anaheim | CA | — | ◇ UNVERIFIED |
| Sky Rider Equipment CO INC | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| SISme Industries, INC. | Chubbuck | ID | — | ◇ UNVERIFIED |
| SSSmith System Manfacturing CO | Princeton | MN | — | ◇ UNVERIFIED |
| STSms Technical Services LLC Taylor Division | Taylor | MI | — | ◇ UNVERIFIED |
| SMSola Model/z Facility 1 LLC | Los Angeles | CA | — | ◇ UNVERIFIED |
| SCSoutheastern Canopies, INC | Locust Grove | GA | — | ◇ UNVERIFIED |
| SOSoutheastern Outdoor Products, Incorporated | Clinton | NC | — | ◇ UNVERIFIED |
| SMSouthland Manufacturing INC | Douglasville | GA | — | ◇ UNVERIFIED |
 Southwest Mobile Storage INC | San Diego | CA | — | ◇ UNVERIFIED |
| SFSpecialty Frabricators and Erectors, INC. | Hammond | LA | — | ◇ UNVERIFIED |
| SFSpeeler Foundations INC. | Clearwater | FL | — | ◇ UNVERIFIED |
| SBStar Building (formerly Ceco Buildings) | Lockeford | CA | — | ◇ UNVERIFIED |
| SBStar Building Sys | Elizabethton | TN | — | ◇ UNVERIFIED |
| SCStarcco Company, INC. | Maryland Heights | MO | — | ◇ UNVERIFIED |
| SSStarflite Systems INC. | Connoquenessing | PA | — | ◇ UNVERIFIED |
| SSStarflite Systems INC. | Saxonburg | PA | — | ◇ UNVERIFIED |
| SSStar Storage Solutions LLC | Lafayette | IN | — | ◇ UNVERIFIED |
| SSStar Storage Solutions LLC | Lafayette | IN | — | ◇ UNVERIFIED |
| SBSteel Buildings and Structures | Mount Airy | NC | — | ◇ UNVERIFIED |
| SCSteel Cell of North America INC. | Cornelia | GA | — | ◇ UNVERIFIED |
| SMSteel & Metal Systems, INC. | Blackshear | GA | — | ◇ UNVERIFIED |
| SSSteelox Systems, INC. | Washington Court House | OH | — | ◇ UNVERIFIED |
| SCSteelstar Corporation | Dacono | CO | — | ◇ UNVERIFIED |
| STSteel Tech Industrial CORP | Corona | CA | — | ◇ UNVERIFIED |
| SRStephanus Rudolf Lemmer | Waverly | GA | — | ◇ UNVERIFIED |
| SBSterling Boiler and Mechanical, INC. | Evansville | IN | — | ◇ UNVERIFIED |
| SPStone Perforating | Chicago | IL | — | ◇ UNVERIFIED |
| SUStructures Unlimitied INC. | Bow | NH | — | ◇ UNVERIFIED |
| SOStruXure Outdoor, Inc. | Dahlonega | GA | — | ◇ UNVERIFIED |
| SLSunFlower LLC | Gilmanton Iron Works | NH | — | ◇ UNVERIFIED |
| SMSunrooms & More Design Center INC. | Oklahoma City | OK | — | ◇ UNVERIFIED |
| SCSunspot Carports & Patio | Claremore | OK | — | ◇ UNVERIFIED |
| SWSuper Welding of Southern California INC | Chula Vista | CA | — | ◇ UNVERIFIED |
| TAT. A. Pelsue Company | Englewood | CO | — | ◇ UNVERIFIED |
| TATaylor and Sons Pipe and Steel | Chickasha | OK | — | ◇ UNVERIFIED |
| TCTaylord Containers | Spokane Valley | WA | — | ◇ UNVERIFIED |
| TLTeam Logistics Services | Oceanside | CA | — | ◇ UNVERIFIED |
| TSTech-fab Structural Steel, LLC | Vandalia | MO | — | ◇ UNVERIFIED |
| TSTehran Sanaat INC | San Bernardino | CA | — | ◇ UNVERIFIED |
| TBTerry Building CO. | Oklahoma City | OK | — | ◇ UNVERIFIED |
| TITeton International | Casper | WY | — | ◇ UNVERIFIED |
| TBTexas Building Center | Kingsland | TX | — | ◇ UNVERIFIED |
| TMTexas Metal Structures LLC | Marquez | TX | — | ◇ UNVERIFIED |
| TGT & G Carports & Sheds CORP | Plant City | FL | — | ◇ UNVERIFIED |
| TCThe Chism Company | San Antonio | TX | — | ◇ UNVERIFIED |
| TMThe Mezzanine Company Inc | Stirling | NJ | — | ◇ UNVERIFIED |
| TLThomas L Wood Metal Bld INC | Odessa | TX | — | ◇ UNVERIFIED |
| THThrill Holdings, LLC | Pomona | CA | — | ◇ UNVERIFIED |
| TSTipton Structural Fabrication INC | Tipton | IA | — | ◇ UNVERIFIED |
| TMTitan Metal Products, LLC | Plain City | OH | — | ◇ UNVERIFIED |
| TMT & M Manufacturing, INC. | Tremonton | UT | — | ◇ UNVERIFIED |
| TSTmp Servicesna INC. | Riverside | CA | — | ◇ UNVERIFIED |
| TTTotally Tubular Mfg., INC. | Aberdeen | SD | — | ◇ UNVERIFIED |
| TCTown & Country Industries | Jacksonville | FL | — | ◇ UNVERIFIED |
| TITrachte, INC. | Oregon | WI | — | ◇ UNVERIFIED |
| TITrachte INC - Plt 3 | Oregon | WI | — | ◇ UNVERIFIED |
| TSTrademark Shed Company, LLC | Deer Lodge | TN | — | ◇ UNVERIFIED |
| TBTrident Building Systems, INC. | Bonita Springs | FL | — | ◇ UNVERIFIED |
| TBTrident Building Systems, INC. | Tallahassee | FL | — | ◇ UNVERIFIED |
| TFTri Fab, LLC | Sand Springs | OK | — | ◇ UNVERIFIED |
| TCTriple Crown Structures, Inc | Mertzon | TX | — | ◇ UNVERIFIED |
| TRTriple R Metal LLC | Redmond | OR | — | ◇ UNVERIFIED |
| TSTri State Carports INC | Harrisburg | OR | — | ◇ UNVERIFIED |
| TSTrojan Steel, LLC | Houston | TX | — | ◇ UNVERIFIED |
| TFTru-Bilt Farm & Commercial Building Company | Marion | IL | — | ◇ UNVERIFIED |
| TTruecore | Waterloo | IN | — | ◇ UNVERIFIED |
| TLTrueCore, LLC | Laurens | SC | — | ◇ UNVERIFIED |
| TTTruss T Structures INC | Woodburn | OR | — | ◇ UNVERIFIED |
| TCT&t Construction | Austin | TX | — | ◇ UNVERIFIED |
| UCUnion Corrugating | Ocala | FL | — | ◇ UNVERIFIED |
| USUnited Structures of America | Portland | TN | — | ◇ UNVERIFIED |
| UUnknown | Starke | FL | — | ◇ UNVERIFIED |
| UIUnr-rohn, INC. (bessemer | Bessemer | AL | — | ◇ UNVERIFIED |
| USUprite Systems | Moroni | UT | — | ◇ UNVERIFIED |
| UAU.s. Aluminum Services CORP | Orlando | FL | — | ◇ UNVERIFIED |
| UOUsdol Osha - (mobile) | Dothan | AL | — | ◇ UNVERIFIED |
| UOUsdol Osha - Tampa Ao | Sarasota | FL | — | ◇ UNVERIFIED |
| ULUsp Lumber Connectors | Livermore | CA | — | ◇ UNVERIFIED |
| VCValley Car Ports | Tulare | CA | — | ◇ UNVERIFIED |
| VJValley Joist CO | Fort Payne | AL | — | ◇ UNVERIFIED |
| VMValley Metal Buildings, INC. | Jerome | ID | — | ◇ UNVERIFIED |
| VLValue Lighting of Houston, LLC | Carrollton | TX | — | ◇ UNVERIFIED |
| VBVarco-pruden Building | Pine Bluff | AR | — | ◇ UNVERIFIED |
| VPVarco Pruden Buildings INC | Southaven | MS | — | ◇ UNVERIFIED |
| VLVelent, LLC | Centerton | AR | — | ◇ UNVERIFIED |
 Vigor Marine | Portland | OR | — | ◇ UNVERIFIED |
| Vigor Marine | Portland | OR | — | ◇ UNVERIFIED |
| VBV-p Buildings | Van Wert | OH | — | ◇ UNVERIFIED |
| VBVp Buildings INC | Pine Bluff | AR | — | ◇ UNVERIFIED |
| WIWa317936615 - Insta Fab CO INC | Vancouver | WA | — | ◇ UNVERIFIED |
| WIWa317938713 - Insta Fab CO INC | Vancouver | WA | — | ◇ UNVERIFIED |
| WHWa317939033 - Hci Steel Buildings LLC | Wenatchee | WA | — | ◇ UNVERIFIED |
