Casement windows are hinged windows that open outward like a door, typically operated by a crank mechanism. The sash is attached to the frame by one or more hinges along its side. When the crank is turned, the window swings open horizontally, allowing for maximum ventilation. Casement windows can be opened fully, providing unobstructed views and efficient airflow.
The crank mechanism makes opening and closing casement windows easy, even in hard-to-reach places. This is particularly advantageous for windows placed over kitchen sinks or countertops.