| Alloyd Insulation Co. Inc. | Dayton | OH | Subcontractor |
| All South Lightning Protection, Inc. | Tampa | FL | Subcontractor |
| Alp Systems, Inc. | Waynesville | NC | Subcontractor |
| Alrac Escalators LLC | Staten Island | NY | $0 |
| American Door Installation Of Ca LLC | N Las Vegas | NV | Subcontractor |
| Ameritex Elevator Services, Inc. | San Antonio | TX | Subcontractor |
| Armour Petroleum Service And Equipment Corporation | Fairfield | CA | $0 |
| Asrc Inc. | Binghamton | NY | Subcontractor |
| Associated Industrial Riggers Corp. | East Syracuse | NY | $0 |
| Atlantic Equipment Installers, Inc. | Wallingford | CT | Subcontractor |
| Atlantic Plant Maintenance, Inc. | Pasadena | TX | Subcontractor |
| Autogate Inc. | Berlin Heights | OH | $0 |
| Automatic Entrances Of New Mexico, LLC | Albuquerque | NM | $0 |
| Automatic Entrances Of Wisconsin, LLC | Waukesha | WI | $0 |
| Banham Patent Locks Limited | London | | $0 |
| Biermann Services, Inc. | Chicopee | MA | $0 |
| Black Mountain Excavating, Corp. | Payson | AZ | $0 |
| Bluegrass Lightning Consultants Inc. | Bloomfield | KY | Subcontractor |
| Bradford Garage Doors, LLC | Cunningham | TN | $0 |
| Built Casework, LLC | New Windsor | MD | Subcontractor |
| Bw Contractors, Inc. | Cedar Falls | IA | $0 |
| Capital City Overhead Door, L.L.C | Zachary | LA | $0 |
| Capital Insulation Inc. | Topeka | KS | $0 |
| Cardinal Contracting, LLC | Indianapolis | IN | Subcontractor |
| Carolina Elevator Cooperative Inc. | Myrtle Beach | SC | $0 |
| C & D Garage Doors | Tucson | AZ | $0 |
| Cedar Investment Group LLC | North Liberty | IA | Subcontractor |
| Centric Elevator Corp. Of Arizona | Phoenix | AZ | Subcontractor |
| Chicopee Industrial Contractors, Inc. | Chicopee | MA | $0 |
| Clayco, Inc. | Clermont | FL | Subcontractor |
| Coastal Garage Doors, LLC | Hinesville | GA | Subcontractor |
| Collins Elevator Service, Inc. | Washington | DC | Subcontractor |
| Colt Insulation, Inc. | Finksburg | MD | $0 |
| Commercial Door Incorporated | Nampa | ID | $0 |
| Commercial Door Of Orange County, Inc. | Santa Ana | CA | $0 |
| Concho Valley Door, Inc. | San Angelo | TX | $0 |
| Continental Door Company, L.L.C. | Spokane Valley | WA | $0 |
| Crawford Door Sales Company, Twin Cities | Saint Paul | MN | $0 |
| Crawford Door Sales Of Idaho Inc. | Boise | ID | Subcontractor |
| Crawford Door Specialties Inc. | Grosse Pointe Woods | MI | $0 |
| Custom Home Elevator & Lift Co. Inc. | Blue Ash | OH | $0 |
| D & A Door & Specialties Inc. | Boise | ID | Subcontractor |
| Davis Door Service, Inc. | Seattle | WA | $0 |
| Dews Enterprises, Inc. | Dummerston | VT | $0 |
| Diamond Elevator Inc. | San Ramon | CA | $0 |
| Dixie Industrial, LLC | Jacksonville | FL | Subcontractor |
| Don Gorman Electric, LLC | Santa Fe | NM | Subcontractor |
| Dormakaba USA Inc.Oklahoma City, OK · UEI LB6KDN6F9LA3 | Oklahoma City | OK | $0 |
| Dormakaba USA Inc.Henrico, VA · UEI T7GKJZW816L5 | Henrico | VA | $0 |
| Drny Entrances Corp. | Hopewell Junction | NY | Subcontractor |
| Easy Way Insulation Co. Inc. | Hanahan | SC | Subcontractor |
| Elevator Modernization Co. Inc. | Capitol Heights | MD | $0 |
| Ellington Industries, Inc. | Hampstead | NC | Subcontractor |
| Emmons County | Linton | ND | $0 |
| E.p.s.d. Inc. | El Paso | TX | Subcontractor |
| Ero Maintenance, Inc. | Baton Rouge | LA | $0 |
| Excell Environmental Inc. | Buda | TX | $0 |
| Excelsior Elevator Corporation | Santa Ana | CA | Subcontractor |
| Extended Home Living Services, Inc. | Arlington Heights | IL | $0 |
| Frost Fire Insulation, Inc. | Mount Airy | MD | $0 |
| Fujitec America Inc. | Tukwila | WA | $0 |
| Gaftek, Inc. | Epsom | NH | Subcontractor |
| Gary R Banks Industrial Group Limited Liability Company | West Berlin | NJ | $0 |
| G-con Sp. Z O.o. | Warszawa | | Subcontractor |
| G. & D. Clarke Machinery Movers, Inc. | Wynantskill | NY | $0 |
| Godwin Elevator Co. Inc. | Raleigh | NC | $0 |
| Grand Eagle Insulation Inc. | Grand Rapids | MI | $0 |
| Grand Stage Lighting Co. | Chicago | IL | $0 |
| Handyman Nation Inc. | Burlington | ND | $0 |
| Harthy Company, LLC | Rosedale | MD | $0 |
| H-B Supply Company | Kennewick | WA | Subcontractor |
| Henke Industrial, LLC | Florence | KY | $0 |
| Heritage Overhead Door Companies, Inc. | Syracuse | NY | $0 |
| Hudson Bay Insulation Co. | Seattle | WA | Subcontractor |
| Independent Elevator Co. LLC | Coventry | CT | $0 |
| Indiana Door LLC | Edinburgh | IN | Subcontractor |
| Industrial Insulation Inc. | Fairbanks | AK | Subcontractor |
| Industrial Transfer And Storage, Inc. | Southbridge | MA | Subcontractor |
| Inspections NW LLC | Arlington | WA | $0 |
| Insulation Specialists, Inc. | Spokane Valley | WA | $0 |
| Integrated Controls LLC | Independence | MO | $0 |
| Jabal Building LLC | Greenville | OH | Subcontractor |
| Jcon Insulation, A Texas Limited Liability Company | China Spring | TX | $0 |
| Jersey Elevator, LLC | Aberdeen | NJ | Subcontractor |
| J & L Telcom Inc. | West Plains | MO | $0 |
| J Mapel Contracting Co. | Coraopolis | PA | $0 |
| John Flora Contracting L.L.C | Apple Grove | WV | $0 |
| Kelly Sales Corporation | Madrid | NY | Subcontractor |
| Kinetic Improvement Inc. | Albuquerque | NM | Subcontractor |
| K M K Insulation, Inc. | North Haven | CT | Subcontractor |
| Krakel Sales LLC | Englewood | CO | $0 |
| Kt Equipment Services Inc. | Waxahachie | TX | $0 |
| Lee Baxter Enterprises, Inc. | Westbrook | ME | $0 |
| Lee Contracting, Inc. | Pontiac | MI | Subcontractor |
| Legacy Automatic Doors, LLC | Harleysville | PA | $0 |
| Lg Contracting Inc. | Palm Harbor | FL | Subcontractor |
| Lightning Protection Systems, LLC | North Salt Lake | UT | Subcontractor |
| L & M Boiler Systems, Inc. | Austin | MN | $0 |
| Loehr Lightning Protection Co. | Richmond | VA | Subcontractor |
| L. & T., Inc. | Lyons | GA | $0 |
