Phone: (218) 722-1630 Duluth, Minnesota 4210 Airpark Boulevard, 55811 |
 | ESC Systems Sound and Life Safety Phone: (218) 624-7444 Duluth, Minnesota 420 West 3rd Street, 55806 |
| Mesaba Electric Phone: (218) 723-1413 Duluth, Minnesota 2515 West Superior Street, 55806 |
| Api Technologies Phone: (218) 628-3323 Duluth, Minnesota 4631 Mike Colalillo Drive, 55807 |
| Norcomm Network Phone: (218) 722-6162 Duluth, Minnesota 16 Olive Street, 55811 |
| Circuits Plus Phone: (218) 729-9064 Duluth, Minnesota 307 East Central Entrance, 55811 |
| YAX Technologies Inc Phone: (218) 724-8454 Duluth, Minnesota 3907 Porter Road, 55803 |
| Great Lakes Alarm & Security Products, Inc. Phone: (218) 724-4000 Duluth, Minnesota 2820 Piedmont Avenue Suite East, 55811 |
| Sell Hardware Inc Phone: (218) 722-0845 Duluth, Minnesota 117 South 27th Avenue West, 55806 |
| Security Locksmith Service Phone: (218) 727-5809 Duluth, Minnesota 1718 West 1st Street, 55806 |
| Harbor Security Shop Inc Phone: (218) 727-9333 Duluth, Minnesota 213 East Superior Street, 55802 |
| A Minnesota Locksmith Phone: (218) 722-3294 Duluth, Minnesota 33 West Central Entrance, 55811 |
| Arrowhead Security Systems Inc Phone: (218) 722-1234 Duluth, Minnesota 205 West 2nd Street Suite 140, 55802 |
| Krantz Communications Phone: (218) 722-0193 Duluth, Minnesota 2211 West 12th Street, 55806 |
| Jayen Of Duluth Inc Phone: (218) 729-9300 Duluth, Minnesota 5051 Miller Track Highway, 55802 |
| Viking Automatic Sprinkler Company Phone: (218) 733-0962 Duluth, Minnesota 4425 Venture Avenue, 55811 |
| Innovative Fire Protection Inc Phone: (218) 724-4594 Duluth, Minnesota 1001 131st Avenue West, 55808 |
| Electric Scientific Company Phone: (218) 729-7330 Duluth, Minnesota 4941 Lightning Drive, 55811 |
