What are the best door bolts to use for securing French doors?

The best door bolts to use for securing French doors are typically flush bolts or surface bolts. Flush bolts are installed within the door and slide into the door frame, while surface bolts are mounted on the surface of the door and frame. Both types provide added security by securing the inactive door panel in place. It is important to choose high-quality bolts that are sturdy and durable to effectively secure French doors.