An "Automatic Bifold" door gives you the flexibility to make your door opening a practical width for today's large equipment, trucks or airplanes without worrying every time you enter your building with large equipment. Are you going to clear the side columns? Width is no problem with a bifold! An older building with too small of a door opening is almost useless, but you can put your building back to work for you again by going bifold. It really sharpens up the appearance of older buildings.