Sliding doors are a type of door that opens by sliding along a track, rather than swinging open like traditional doors. They are commonly made of glass or lightweight materials, allowing for easy access and maximizing natural light in a space. Sliding doors are often used in homes, offices, and commercial buildings, providing a seamless transition between indoor and outdoor areas. These doors can be found in various styles, including patio doors and wardrobe doors. They are popular for their space-saving design, as they do not require additional clearance for swinging. Sliding doors can also enhance energy efficiency when equipped with proper insulation and seals.