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 a clear view and can enhance the energy efficiency of a home by creating a tight seal when closed. These windows are popular in various architectural styles and can be made from materials like wood, vinyl, or aluminum. Casement windows are often used in combination with other window types, such as fixed windows, to create a visually appealing and functional design.