Sliding windows are a type of window design that consists of two or more sashes that slide horizontally along a track. This allows for easy opening and closing, providing ventilation while maintaining a sleek appearance. They are often made of materials like vinyl, wood, or aluminum, and can be customized to fit various architectural styles. These windows are popular in modern homes due to their space-saving design and ease of use. They can be fitted with screens to keep insects out while allowing fresh air in. Additionally, sliding windows are energy-efficient options when properly sealed and installed.