| Business | Phone |
| Berman Industries Inc 1728 S Michigan Ave, Chicago 60616 | (312) 427-6500 |
| Focal Point Lighting 4201 S Pulaski Rd, Chicago 60632 | (773) 247-9494 |
| Duray Fluorescent Mfg Co 2050 W Balmoral Ave, Chicago 60625 | (773) 271-2800 |
| Design Galleries 155 N Wacker Dr 610, Chicago 60606 | (312) 372-5860 |