A "Single Door" refers to a type of door that consists of a single panel, typically hinged on one side. It is commonly used in residential and commercial buildings to provide access between rooms or to the outside. Single doors can be made from various materials, including wood, metal, and fiberglass, and they come in different styles and designs to suit various architectural aesthetics. In contrast to double doors, which have two panels that open outward or inward, single doors are more space-efficient and easier to install. They are often equipped with a handle and a locking mechanism for security. Single doors can also be found in various sizes, accommodating different entryway dimensions.