The door is an opening in the wall / field that facilitates the circulation between spaces surrounded by the wall / field. Doors are usually found in buildings, such as houses. In addition, the door also exists in vehicles, cabinets, and others.
Most doors are made of wood and the rest, in limited use are made of aluminum, iron and PVC plastic. Wooden doors consist of several types. The most common are doors made of whole wood. Besides that there is also a wooden door type "Flush", in which there is a vacuum.
Pictures taken from googling seekers.
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