Windows and doors are essential components of a building's structure. They provide access, ventilation, and natural light. Windows are typically made of glass and can be opened or closed, while doors are solid barriers that allow entry and exit. Both come in various styles and materials, including wood, metal, and vinyl. In addition to their functional roles, windows and doors contribute to a building's aesthetic appeal. They can enhance the overall design and style, whether traditional or modern. Proper installation and maintenance are crucial for energy efficiency and security, ensuring that they serve their purpose effectively.