Replacement Bay Windows in Mandan, Bismarck & Williston, ND

Enjoy the additional light and space provided by Infinity Replacement Bay Windows, as well as the low maintenance of fiberglass window construction.
You can find replacement Bay Windows and other window options at Fettig Millwork & Windows in Mandan, Bismarck & Williston, ND.


  • Customize the Infinity Bay for your home by selecting Infinity Double Hung or Casement window configuration
  • Choose from a picture window or operating center unit for total ventilation.
  • Standard pine or optional oak head and seat boards that are insulated for extra comfort and installed by Fettig Millwork & Windows.

Make sure to check out out Features and Options!

Call (701) 751-0407 today to schedule a free consultation from Fettig Millwork & Windows – or Contact Us online.