With 3 bookshelves at a time, they can be stacked and used as one large bookshelf and can be used separately to meet various usage needs. Multiple shelves provide a multi-layered approach to storage, and the 12.8-inch shelf allows you to place a variety of large folders and files. This shelf can be placed not only in the study, but also in the living room, entryway, bedroom, or even as a model display case, making it suitable for a variety of uses. On the other hand, it can be used not only vertically, but also horizontally, so there is always a way to meet your needs.