Bi-fold doors are made of two hinged panels, allowing them to be collapsed when opened. They are great for use in smaller spaces as they free up room directly behind an entranceway, and are also handy in areas that need to be kept open most of the time for easy access. Alternatively, they can be used to divide two connecting rooms that sometimes function as one larger space. Aesthetically, this option can be styled to fit a number of looks thanks to the variety of finishes available. Paintable versions are good if using a bi-fold door for a cupboard, allowing it to be matched to other furniture, whilst ready-treated styles help cut down on decorating time.