A door is often called a patio door when it opens onto a patio or porch. One of the two panels slides to the left or right, while the other panel is stationary. Either door can be set to move or be stationary to make an easy entrance. These doors offer a great view and a large area for ventilation. The screen is on a track on the outside unlike some brands that have their screens on the inside. The amount of airflow can easily be adjusted by how far the moveable door is slid open.
A mainly glass door that opens onto a patio, deck or backyard of a house. The door panel is comprised of operable and stationary units. ( style guide)
Also known as a "Patio Door" or "Sliding Door".