This is a difficult decision. Folding doors can be produced without top or bottom rail (hanging on hinges), only with top rail, with bottom and top rail, also there can be different sash positioning options and door locking methods.

The advantage of such doors is that the sash has the ability to fold in one direction or another, thus creating a feeling of space and freedom. This solution is not for every object for a variety of reasons, but having a folding door in your home or office ensures a unique design.