Bifold French doors are perfect for large wall openings, incorporating external areas like your garden or patio into your inside living space. The size and number of your bifolding door leaves are deciding factors, though. You can design bifold patio doors with up to five-door leaves and an overall size of up to 4410 mm in the windows24.com configurator. It's up to you to have the whole system built with bifold hinges. One door leaf can alternatively be built as a pivot door, too.