Casement fix windows are casement windows that look like they will open, but in fact they don’t. Some even have decorative cranks.
They are most often used as a decorative addition to larger or multiple side-by-side windows, especially bay ones. Unlike window walls, their features include charming frames and grids (technically, called “muntins”) reminiscent of an earlier era. In modern architecture, they are used to create patterns, providing an eye-catching way to let the light in.
Casement fixed windows can be used alongside windows that open, to maximize the amount of light that comes into a room; it is a popular feature in townhomes.