Interwest Industries Inc. Share: Custom Homebuilders Interwest Industries Inc. Request Info PO Box 1344 American Fork, UT 84003 (801) 420-1440 Rep Info Map Whom to Contact Shane Morris PO Box 1344 American Fork, UT 84003 Phone: (801) 420-1440 Send an Email What's Nearby? Distance: 5 10 15 20 25 50 mi.