Alucraft combination window combines casement, fixed, and sliding window designs and is the integration of two windows. Combination windows can be of the same type such as casement-casement or different types such as fixed-slider or casement-slider. You can choose combination windows according to different designs and sizes, based on your requirements and preferences. The final product that you get is an attractive, sturdy combination window frame. Adding thermal insulation and sound insulation to your home, combination windows serve to be extremely advantageous. At the same time, they work towards elevating the entire look of your rooms.