Construction Contractor go Results Found: 2 Button group with nested dropdown Viking Automatic Sprinkler AMFA Viking Automatic Sprinkler 4177 Thunderchief Lane Hermantown MN 55811 (218) 269-4262 A.W. Kuettel & Sons, Inc. AMFA A.W. Kuettel & Sons, Inc. 3930 Airpark Blvd Duluth MN 55802-2626 (218) 722-3901