Casement windows are hinged at the side and open outward, allowing for maximum ventilation. They are typically operated with a crank mechanism, making them easy to open and close. This design provides an unobstructed view and can enhance the energy efficiency of a home by creating a tight seal when closed. These windows are popular in both modern and traditional architecture due to their versatility and aesthetic appeal. They can be made from various materials, including wood, vinyl, and aluminum, and are available in different styles and sizes to fit various home designs.