| CDCommercial Display Systems LLC | San Fernando | CA | — | ◇ UNVERIFIED |
| CDCommercial Door | Pomona | CA | — | ◇ UNVERIFIED |
| CDCommercial Door & Hardware INC | Paducah | KY | — | ◇ UNVERIFIED |
| CDCommercial Door Manufacturing INC | Albuquerque | NM | — | ◇ UNVERIFIED |
| CMCommercial Material and Door Supp INC Dba Comm Mill & Build Supp | Milpitas | CA | — | ◇ UNVERIFIED |
| CMCommercial Metal Plastics and Graphics Inc. | Orlando | FL | — | ◇ UNVERIFIED |
| CDComplete Door Systems, INC. | Tucson | AZ | — | ◇ UNVERIFIED |
| CMComplete Manufacturing Services, INC. | Magnolia | TX | — | ◇ UNVERIFIED |
| CMComprehensive Mfg Svcs | Saint Louis | MO | — | ◇ UNVERIFIED |
| CFConcept Frames Incorporated | Newton | NC | — | ◇ UNVERIFIED |
| CSCondoors Security Wrought Iron | Fresno | CA | — | ◇ UNVERIFIED |
| CRContainer Repair Service | Emmaus | PA | — | ◇ UNVERIFIED |
| CCContainment Consultants, INC | Gilroy | CA | — | ◇ UNVERIFIED |
| CCContech Construction Products INC | Ashland | KY | — | ◇ UNVERIFIED |
 Contech Engineered Solutions LLC | Pinellas Park | FL | — | ◇ UNVERIFIED |
| CWContinental Windows and Glass Corporation | Chicago | IL | — | ◇ UNVERIFIED |
| CAControl Access Consultants, INC. | Sacramento | CA | — | ◇ UNVERIFIED |
| CEControlled Enviroments, Inc. | Houston | TX | — | ◇ UNVERIFIED |
| CBCorle Bldg Sys Inc/bedford Cnty | Imler | PA | — | ◇ UNVERIFIED |
| CICornell Iron Works, INC. | Mountain Top | PA | — | ◇ UNVERIFIED |
| CWCoronet Window Company | Kansas City | MO | — | ◇ UNVERIFIED |
| CECorporate Equity LLC | Salt Lake City | UT | — | ◇ UNVERIFIED |
| CRC R Laurence CO INC | Gardena | CA | — | ◇ UNVERIFIED |
| CLC.r. Laurence CO. Inc./united States Aluminum | Miami | FL | — | ◇ UNVERIFIED |
| CLCroft LLC | Magnolia | MS | — | ◇ UNVERIFIED |
| CLCroft LLC | Magnolia | MS | — | ◇ UNVERIFIED |
| CDCrown Diversified Industries Corporation | Chesterfield | MO | — | ◇ UNVERIFIED |
| CICrown Incorporated | Plato | MN | — | ◇ UNVERIFIED |
| CMCrown Metal Buildings | Cabot | AR | — | ◇ UNVERIFIED |
| CWCrystal Window & Door Systems Pa, LLC | Dalton | PA | — | ◇ UNVERIFIED |
| CBCt Builders | Great Falls | MT | — | ◇ UNVERIFIED |
| CTC & T Building Technologies, LLC | Cypress | TX | — | ◇ UNVERIFIED |
| CDCurries Division of Aadg, INC - 9th Street | Mason City | IA | — | ◇ UNVERIFIED |
| CHCustodio Holdings, LLC | Henrico | VA | — | ◇ UNVERIFIED |
 Custom Doors & Associates, LLC | Davie | FL | — | ◇ UNVERIFIED |
| CMCustom Metal Buildings LLC | Paris | TN | — | ◇ UNVERIFIED |
| CSCustom Screens | Honolulu | HI | — | ◇ UNVERIFIED |
| CWCustom Window CO. | Englewood | CO | — | ◇ UNVERIFIED |
| CLCvx LLC | Telford | PA | — | ◇ UNVERIFIED |
| CACw Aluminum LLC | Carolina | PR | — | ◇ UNVERIFIED |
| DDD5 Design and Metal Fabrication, LLC | Chicago | IL | — | ◇ UNVERIFIED |
| DDDab Door Company, INC. | Hialeah Gardens | FL | — | ◇ UNVERIFIED |
| DMDailey Manufacturing CO | Willow Grove | PA | — | ◇ UNVERIFIED |
 Dakota Bodies LLC | Liberty | MO | — | ◇ UNVERIFIED |
| DSDans Steel Company | Salem | OR | — | ◇ UNVERIFIED |
| DMDauenhauer Manufacturing | Santa Rosa | CA | — | ◇ UNVERIFIED |
| DBD B Western INC | North Bend | OR | — | ◇ UNVERIFIED |
| DSDean Steel Buildings INC | Fort Myers | FL | — | ◇ UNVERIFIED |
| DBDeere Built, LLC | Ardmore | OK | — | ◇ UNVERIFIED |
| DRDelaney Road Facility | Hitchcock | TX | — | ◇ UNVERIFIED |
| DMDelden Manufacturing Co., INC. | Valley Park | MO | — | ◇ UNVERIFIED |
| DMDialum Manufacturing CORP | Caguas | PR | — | ◇ UNVERIFIED |
| DDDiamond Door Products LTD | Hempstead | TX | — | ◇ UNVERIFIED |
| DADigital Automation Technical Service, Inc | Anoka | MN | — | ◇ UNVERIFIED |
| DSDiscount Structures, Ltd | Norristown | PA | — | ◇ UNVERIFIED |
| DSDistinctive Skylights | Richmond | CA | — | ◇ UNVERIFIED |
| DWDiversified Window & Door, INC. | Cairo | GA | — | ◇ UNVERIFIED |
| DMDixieland Metals of Alabama LLC | Dothan | AL | — | ◇ UNVERIFIED |
| DIDlfca INC | West Sacramento | CA | — | ◇ UNVERIFIED |
| DUDock USA INC | Chino | CA | — | ◇ UNVERIFIED |
| D2Dolla 2 Eighty, Inc. | Pensacola | FL | — | ◇ UNVERIFIED |
| DWDon's Windows & Doors | Albuquerque | NM | — | ◇ UNVERIFIED |
| DYDon Young Company, INC. | Oklahoma City | OK | — | ◇ UNVERIFIED |
| DCDoor Components | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| DCDoor Components | Fontana | CA | — | ◇ UNVERIFIED |
| DEDoor Engineering & Manufacturing | Kasota | MN | — | ◇ UNVERIFIED |
| DBDoors boutique LLC | Bayamon | PR | — | ◇ UNVERIFIED |
| DSDoor Solutions INC | Beaverton | OR | — | ◇ UNVERIFIED |
| DADorland Access Systems International INC | Beverly Hills | CA | — | ◇ UNVERIFIED |
 Dormakaba USA INC | Steeleville | IL | — | ◇ UNVERIFIED |
| Dormakaba Usa, INC. Dba Crane Revolving Door | Lake Bluff | IL | — | ◇ UNVERIFIED |
| Dormakaba USA INC. Deerfield Beach | Deerfield Beach | FL | — | ◇ UNVERIFIED |
| DMDor-Win Manufacturing Co | Elmwood Park | NJ | — | ◇ UNVERIFIED |
| DRDotson Rosevelt | Shreveport | LA | — | ◇ UNVERIFIED |
| DLDouglas & Lomason Company | Phenix City | AL | — | ◇ UNVERIFIED |
| DIDrc Industries, INC. | Deerfield Beach | FL | — | ◇ UNVERIFIED |
| DLDual Lock Partition Systems INC | Tualatin | OR | — | ◇ UNVERIFIED |
| DCDunbarton Corporation | Dothan | AL | — | ◇ UNVERIFIED |
| DSDuraframe Solutions LLC | Webster | NY | — | ◇ UNVERIFIED |
| DADura-lite Aluminum Products INC. | Lafayette | LA | — | ◇ UNVERIFIED |
 Dynamic Fabrication INC | Santa Ana | CA | — | ◇ UNVERIFIED |
| DDDynamite Door CO. | Hartville | OH | — | ◇ UNVERIFIED |
| EFEab Fabrication | Quincy | MI | — | ◇ UNVERIFIED |
| ECEagle Carports INC | Mount Airy | NC | — | ◇ UNVERIFIED |
| EBEast Bay Bumpers | San Leandro | CA | — | ◇ UNVERIFIED |
| EBEast Bay Glass Company, INC. | Oakland | CA | — | ◇ UNVERIFIED |
| ECEast Coast Wholesale Aluminum Products, INC. | West Palm Beach | FL | — | ◇ UNVERIFIED |
| ESEcp Safe-way LLC | Murfreesboro | TN | — | ◇ UNVERIFIED |
| ECEdessa Corporation 'which Will Do Business in California As Naddours Ornamental | Santa Ana | CA | — | ◇ UNVERIFIED |
| ECEfco CORP | Barnwell | SC | — | ◇ UNVERIFIED |
| ECEfco Corporation | Verona | VA | — | ◇ UNVERIFIED |
| ECEfco CORP Plant Ii | Monett | MO | — | ◇ UNVERIFIED |
| EMEfco Monett | Monett | MO | — | ◇ UNVERIFIED |
| EFEh Friedrich CO | Holyoke | MA | — | ◇ UNVERIFIED |
| EGElegance Garage Doors LLC | Cidra | PR | — | ◇ UNVERIFIED |
| ESElegant Security Products INC | Memphis | TN | — | ◇ UNVERIFIED |
| ESElgin Service Center, INC. | Venedocia | OH | — | ◇ UNVERIFIED |
| ECEliason CORP Div of Chase Doors | Portage | MI | — | ◇ UNVERIFIED |
| EHElite Hurricane Products, Inc. | North Port | FL | — | ◇ UNVERIFIED |
| EPElite Performance LLC | Heber City | UT | — | ◇ UNVERIFIED |
