| Business | Phone |
| Annapolis Lighting Co 1616 Rockville Pike # A, Rockville 20852 | (301) 231-4994 |
| Rexel Branch 425 E Gude Dr, Rockville 20850 | (301) 762-8100 |
| Commerce Electric Supply Rockville 20850 | (301) 251-1501 |
| Lighting Unlimited 11760 Parklawn Dr, Rockville 20852 | (301) 468-3500 |