| Business | Phone |
| Collins Elevator Svc 800 Hamlin St Ne, Washington 20017 | (202) 635-8811 |
| Jackson Graham Building 600 5th St Nw, Washington 20001 | (202) 388-3715 |
| Omni Elevator Inspection Svc 325 Pennsylvania Ave Se, Washington 20003 | (202) 675-6308 |
| Thyssen Krupp Elevator 1120 19th St Nw # 25, Washington 20036 | (202) 223-4130 |
| Warfield & Sanford Elevator Co 2133 9th St Nw, Washington 20001 | (202) 332-1065 |
| Trinity Elevator Corp 1028 Bladensburg Rd Ne, Washington 20002 | (202) 388-3715 |