Architectural

Chicago Switchboard Company

470 W. Wrightwood Avenue
Elmhurst, IL 60126
(630) 833-2266
(630) 833-2277
www.chiswbd.com
Box Shop Industrial

Erickson Electrical Equipment Co.

475 Bonnie Lane
Elk Grove Village, IL 60007
(847) 640-7701
(847) 640-0565
www.ericksonelectric.com
Box Shop

Gus Berthold Electric Co.

1900 W. Carroll Avenue
Chicago, IL 60612
(312) 243-5767
(312) 243-5811
www.bertholdelectric.com
Box Shop

J & A Sheet Metal

1800 N. Campbell Avenue
Chicago, IL 60647
(773) 276-3739
(773) 276-5151
www.jasheet.com
Box Shop

Peterson Electric Panel Mfg. Co.

5550 Mc Dermott Drive
Berkeley, IL 60163
(708) 449-2270
(708) 449-2269
www.petersonpanel.com
Box Shop

R. J. Olmen Company

3200 W. Lake Avenue
Glenview, IL 60026
(847) 724-0994
(847) 724-7307
www.rjolmencompany.com
Box Shop Commercial Industrial HVAC Kitchen
Duct Fabrication

S Mechanical, Inc.

16420 S. Kilbourn Avenue
Oak Forest, IL 60452
(708) 535-3600
(708) 535-6655
www.smechanical.com
Box Shop Commercial Commercial Service Industrial HVAC Kitchen Light Commercial