IDA regulations require an emergency sign with letters of a minimum height of two inches including the name and phone number of the owner, manager or agent of the anhydrous ammonia storage location. The sign must be located at the entrance to the site property or apart from the storage tanks. The Asmark Institute emergency sign program goes above and beyond compliance with this regulation. Signs are 39.5" long by 24" wide, are made of wind and weather resistant material and come printed with your company information for just $120 each. Cick on the heading above to order a sign.