Enjoy Fresh Air.
Casement window sashes are attached to the frame by one or more hinges. Depending on the style, they can swing outward or inward either by hand or by turning a crank. When open like a door, there is nothing to block the airflow, allowing Casement windows to provide superior ventilation. The Marvin Ultimate Casement windows features a patented wash mode that allows access to both sides of the window from inside.