| ISIsland Screen INC. | Waipahu | HI | — | ◇ UNVERIFIED |
| ISIsland Style Windows and Doors, Inc. | Naples | FL | — | ◇ UNVERIFIED |
| JBJackson Buildings | Kempner | TX | — | ◇ UNVERIFIED |
| JWJack Walters & Sons, CORP. | Eau Claire | WI | — | ◇ UNVERIFIED |
| JIJada INC | Grass Valley | CA | — | ◇ UNVERIFIED |
| JSJameson Steel Fabrication, INC. | Oakwood | IL | — | ◇ UNVERIFIED |
 Jamison Door Company | Williamsport | MD | — | ◇ UNVERIFIED |
| JSJansen Shutters & Specialties | Venice | FL | — | ◇ UNVERIFIED |
| JIJanus International | Orlando | FL | — | ◇ UNVERIFIED |
| JAJawor Acquisition Co. | Norton Shores | MI | — | ◇ UNVERIFIED |
| JEJax Enterprises, LLC | Jacksonville | FL | — | ◇ UNVERIFIED |
| JCJbt Corporation | Ogden | UT | — | ◇ UNVERIFIED |
| JWJeld Wen | Ozark | AL | — | ◇ UNVERIFIED |
| JHJeld-wen Holding, INC. | Venice | FL | — | ◇ UNVERIFIED |
| JSJemstad Services, INC. | Augusta | GA | — | ◇ UNVERIFIED |
| JIJenisys Incorporated | Hanover Township | PA | — | ◇ UNVERIFIED |
| JMJ.i.g. Machine Works, INC. | New Iberia | LA | — | ◇ UNVERIFIED |
| JKJ Kozel & Sons, INC. | Rochester | NY | — | ◇ UNVERIFIED |
| JCJL Components, LLC | Kansas City | MO | — | ◇ UNVERIFIED |
| JLJ L Walter & Associates Incorporated | Indianapolis | IN | — | ◇ UNVERIFIED |
| JMJ & M Precision Sheetmetal | Cotati | CA | — | ◇ UNVERIFIED |
| JLJohn L Conley INC | Hughson | CA | — | ◇ UNVERIFIED |
| JLJohn L Conley INC Dba Conley's Manufacturing & Sales | Montclair | CA | — | ◇ UNVERIFIED |
| JMJohn M Booten INC. | Fort Myers | FL | — | ◇ UNVERIFIED |
| JMJohn Muir Nhs | Martinez | CA | — | ◇ UNVERIFIED |
| JCJohnson Contracting Solutions INC | Portland | OR | — | ◇ UNVERIFIED |
| JTJohnson Thermal Systems | Caldwell | ID | — | ◇ UNVERIFIED |
| JLJose Luis Rivera | Galveston | TX | — | ◇ UNVERIFIED |
| JLJ.p. Lamborn CO. | Lakeland | FL | — | ◇ UNVERIFIED |
| JIJ&s Innovations, LLC | White Bear Lake | MN | — | ◇ UNVERIFIED |
| JWJs West and Companies | Modesto | CA | — | ◇ UNVERIFIED |
| JAJupiter Aluminum Corporation, Jupiter Coil Coating | Beech Bottom | WV | — | ◇ UNVERIFIED |
| JWJw Window Components INC D/b/a Ritescreen | Elizabethton | TN | — | ◇ UNVERIFIED |
| KMKairos Mfg INC Dba Architectural Iron Works | San Luis Obispo | CA | — | ◇ UNVERIFIED |
| KSKaiser Steel Building LLC | Eugene | OR | — | ◇ UNVERIFIED |
| KDKalmont Distributors INC | Kalispell | MT | — | ◇ UNVERIFIED |
| KWKarl W Schmidt & Assoc INC | Commerce City | CO | — | ◇ UNVERIFIED |
| KSKarpen Steel Products INC | Farmingdale | NY | — | ◇ UNVERIFIED |
| KSKarpen Steel Products, INC. | Weaverville | NC | — | ◇ UNVERIFIED |
| KFKaso Fab & Repair, LLC | Panama City | FL | — | ◇ UNVERIFIED |
| KCKawneer Company INC | Orlando | FL | — | ◇ UNVERIFIED |
| KCKawneer Company INC | Riverside | CA | — | ◇ UNVERIFIED |
| KCKawneer Company INC. | Hanover | MD | — | ◇ UNVERIFIED |
| KCKawneer Company, INC. | Roselle | IL | — | ◇ UNVERIFIED |
| KBK Building Components INC | Hibbing | MN | — | ◇ UNVERIFIED |
| KBKD Buyer LLC | Chicago | IL | — | ◇ UNVERIFIED |
| KBKelley Bros LLC | De Ruyter | NY | — | ◇ UNVERIFIED |
| KDKendell Doors - Hardware INC | Saint Paul | MN | — | ◇ UNVERIFIED |
| KCKewanee CORP | Kewanee | IL | — | ◇ UNVERIFIED |
| KMKnarr Metal Building Systems LLC | Sykesville | MD | — | ◇ UNVERIFIED |
| KPKnight Precision Inc | Andover | MN | — | ◇ UNVERIFIED |
| KGKodiak Gypsum Mountain States, LLC | Carrollton | TX | — | ◇ UNVERIFIED |
| KPKonstant Products, INC. | Rolling Meadows | IL | — | ◇ UNVERIFIED |
| KCKoontz-wagner Caldwell | Caldwell | ID | — | ◇ UNVERIFIED |
| KIK-pel Industrial Services, INC. | Nashville Plt | ME | — | ◇ UNVERIFIED |
| KSK & S Ironworks | Middletown | DE | — | ◇ UNVERIFIED |
| KFKt Fabrication INC | Chandler | AZ | — | ◇ UNVERIFIED |
| LDLacantina Doors | Oceanside | CA | — | ◇ UNVERIFIED |
| LILaforce, INC. | Vernon Hills | IL | — | ◇ UNVERIFIED |
| LALake Air Metal Products INC | Coon Rapids | MN | — | ◇ UNVERIFIED |
| LCLakeland CO of Barron County INC | Cumberland | WI | — | ◇ UNVERIFIED |
| LAL and T Precision INC (machine Shop) | San Jose | CA | — | ◇ UNVERIFIED |
| LELang Exterior, INC. | Chicago | IL | — | ◇ UNVERIFIED |
| LMLanson Metal LLC | Grandview | TX | — | ◇ UNVERIFIED |
| LMLarsen's Manufacturing CO | Minneapolis | MN | — | ◇ UNVERIFIED |
| LDLausell Del Caribe LLC | Barceloneta | PR | — | ◇ UNVERIFIED |
| LPLci Plant 119 | Bristol | IN | — | ◇ UNVERIFIED |
| LFLeed Fabrication Services, INC | Brighton | CO | — | ◇ UNVERIFIED |
| LBLegacy Building Supply LLC | North Okaw | IL | — | ◇ UNVERIFIED |
| LSLegacy Steel Fabrication LLC | Amherst | WI | — | ◇ UNVERIFIED |
 Leonard Aluminum Utility Buildings, LLC | Mount Airy | NC | — | ◇ UNVERIFIED |
| Leonard Aluminum Utility Buildings, LLC | Mount Airy | NC | — | ◇ UNVERIFIED |
| LMLeonard Metal Fabricators, Inc | Pearl | MS | — | ◇ UNVERIFIED |
| LWLeone Welding and Fabrication | Sevierville | TN | — | ◇ UNVERIFIED |
| LDLesco Design & Manufacturing CO INC | La Grange | KY | — | ◇ UNVERIFIED |
| LDLifetime Doors, INC. | Los Banos | CA | — | ◇ UNVERIFIED |
| LILif Industries, INC. | Port Washington | NY | — | ◇ UNVERIFIED |
| LILindan Industries LLC | Cincinnati | OH | — | ◇ UNVERIFIED |
| LILindan Industries LLC | Hamilton | OH | — | ◇ UNVERIFIED |
| LWLindsay Windows South LLC | Cumming | GA | — | ◇ UNVERIFIED |
| LMLin-ian Metals (guam) CORP | Tamuning | GU | — | ◇ UNVERIFIED |
| LSLink Staffing Services | Cedar Hill | TX | — | ◇ UNVERIFIED |
 Lippert Components | South Bend | IN | — | ◇ UNVERIFIED |
| Lippert Components, INC | Los Angeles | CA | — | ◇ UNVERIFIED |
| Lippert Components, Inc, -148 | Nappanee | IN | — | ◇ UNVERIFIED |
| Lippert Components Manufacturing, INC. | Double Springs | AL | — | ◇ UNVERIFIED |
| LTLiquid Tech Tank Systems, INC. | Millsboro | DE | — | ◇ UNVERIFIED |
| LKL.l. Klink & Sons INC. | Carpinteria | CA | — | ◇ UNVERIFIED |
| LLL & L Louvers INC | Riverside | CA | — | ◇ UNVERIFIED |
| LDLmr Doors & Windows, INC. | Quebradillas | PR | — | ◇ UNVERIFIED |
| LSLobato Studio LLC | New Braunfels | TX | — | ◇ UNVERIFIED |
| LWLockheed Window CORP | South Easton | MA | — | ◇ UNVERIFIED |
| LWLockheed Window CORP. | Pascoag | RI | — | ◇ UNVERIFIED |
| LSLogan's Steel Buildings, INC. | Sayre | OK | — | ◇ UNVERIFIED |
| LSLone Star Steel & Supply | Mcallen | TX | — | ◇ UNVERIFIED |
| LBLudwig Buildings Enterprises, LLC | Harahan | LA | — | ◇ UNVERIFIED |
| LILur INC | Pomona | CA | — | ◇ UNVERIFIED |
| LLLuxView, LLC | Nashville | TN | — | ◇ UNVERIFIED |
| MHM2h2 Holdings LLC Dba Claborn Manufacturing | Tanner | AL | — | ◇ UNVERIFIED |
| MCMac Cal CO INC | San Jose | CA | — | ◇ UNVERIFIED |
