CALHOME bi-fold barn door with sliding hardware kit contains everything needed to transform any doorway from a traditional door into a convenient, space-saving and stylish sliding bi-fold door. Bifold doors are folding doors made up of 2-pieces of door leaf's that can be folded when opened, maximizing the use of space. Compared to sliding doors and swing doors, bi-fold doors can open a wider space while saving 50% of floor space (swing-space), making them ideal for installation in areas with limited space, such as bedrooms, bathrooms, kitchens and more.