Casement windows are hinged at the side and allow for full top-to-bottom ventilation. Controlled by a rotary crank, they open incrementally for variable airflow with the open window catching the breeze from outside and directing it into the home. Casement windows are ideal for hard-to-reach areas, and they can be opened and closed effortlessly with one hand. They open a full 90 degrees for unobstructed views, and both sides of the window can be cleaned easily from inside the home. Casement windows are extremely airtight with interior screens that remain in place without needing to be slid into place.