Glass doors are transparent barriers made primarily of glass, allowing light to pass through while providing a view of the space beyond. They are commonly used in residential and commercial buildings, offering an elegant and modern aesthetic. Glass doors can be sliding, hinged, or bi-fold, and they often feature frames made of materials like wood or metal for added support. These doors serve various purposes, including entryways, patio access, and interior room divisions. They can enhance natural light in a room and create a sense of openness. Additionally, glass doors can be treated for privacy or energy efficiency, making them versatile for different environments.