Count on Fettig Millwork & Windows for outdoor-living solutions. We know that when you are looking to update your home, quality and value are two of the most important factors. With a Crystal View window system from Fettig Millwork & Windows in Mandan, Bismarck & Williston, ND, these two objectives are met head on. This American-made durable walling system provides flexibility for your outdoor living space. Enjoy all that nature has to offer while being protected from the elements. With a horizontal sliding configuration, you can open your whole wall and create the panorama that you want.