Awning windows are extremely similar to casement windows. Both are crank windows and provide an excellent view, all while also providing airflow.
There are a few differences, however. The most obvious way that they differentiate is where the hinges are located on the window. For awning windows, the hinges are placed on the top of the window, whereas casement windows have hinges on the sides. Instead of opening to the left or the right, awning windows open upwards.
Because of this, awning windows can only be made in certain sizes. They can’t be made nearly as big as casement windows can, just because the hinges can only hold up so much weight. This is why many times you see awning windows assembled in a row as a combination unit.
Awning windows are also typically made for spaces that require a wide surface area, rather than a tall one. In general, they’re often used for areas like bathrooms and basements, where there isn’t quite enough space for a tall window.