Outdoor, House Building Type, and Back Yard View of the steel and glass addition from the rear year, shown with the door closed, protecting the interior elements from the winter cold.  Photo 1 of 9 in A Steel-and-Glass Addition With a Giant Hangar Door Maximizes Indoor/Outdoor Living

A Steel-and-Glass Addition With a Giant Hangar Door Maximizes Indoor/Outdoor Living

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Here, the steel-and-glass addition is closed, protected from the winter cold.