French Doors, sometimes referred to as double doors or double windows, are two glass doors that typically open from a home's back onto a balcony or into the garden. French architecture has been influenced by the idea of fully opening both sashes without seeing a central obstacle since the 17th century.
This magnificent design idea served as the foundation for the entire grace and grandeur of many European buildings. The distinctiveness of French doors and windows was incorporated into modern fenestration, which primarily upgraded the design to incorporate high-performance glazing and complex locking mechanisms while keeping the original charm.