What is a common feature of double doors?

Double doors are characterized by their construction, which typically includes two equal-sized doors that operate together to create a wider entrance. This design allows for easier access, especially for large items or when a more significant flow of traffic is anticipated, making it a practical choice in both residential and commercial buildings.

The two doors can operate in various ways, including swinging towards each other or away from each other, which provides flexibility in their application. This differs from a single door, which is limited to one opening.

Options suggesting that double doors are always sliding, only swing one way, or have no hinges do not accurately represent the standard definition or function of double doors. While some double doors can indeed be sliding or may swing in one direction, this is not a defining characteristic of all double doors, which primarily focuses on the dual construction of equal doors found in most configurations.