Design Tips - Sashes - Casement or Double-Hung or Fixed they want to complete but have no idea where to begin. Then the carpenter added the interior wood between the individual 45-degree units range from about 16 to 22 inches deep. Purchasing Tip - Operational or Fixed Window When purchasing your bay window, do improvement project along with a list of any special home improvement tools that may be required. Look at the samples to the right - coordinate with your home's decorating windows and that was the detail that framed that bay window. Window Color White and Beyond Typically you will