Contact Us

• Most jobs must be costed out individually so please call for a price quote.
• Contact: Bob Durrenberger; DFRFX Division; Durrenberger Engineering Inc.
• Phone: We prefer email correspondence. We will give out our phone number on request. Just ask for it.
• Email: bobdur@gmail.com
• For Postal Mailing Address, contact us.
• Make checks payable to Durrenberger Engineering, Inc. DFRFX is a division of our company.
• Since DFRFX is an on-line business, there is no office or facility that is open to the public. However, meetings and screenings of demo films are available in Los Angeles, San Diego, and other cities, by request. Please call Bob Durrenberger to arrange for meetings or screenings.