These boxes were on sale and represent a good value for organizing household items not just files. They are made of light-weight corrugated so are not well-suited for heavy duty use. The perforations to separate the lid and different sections of the box require additional cutting otherwise you risk bending the corrugated and weakening it if you just try to tear the sections.
When my brother had a fire and his house which was destroyed by the fire department we needed to move a lifetime's accumulation. We spent the day packing his clothing our mother's clothing and our father's clothing. Since we are a family or readers and artists we needed to pack hundreds perhaps thousands of books. The boxes functioned very well for these tasks. Also packed were paints pencils paper and other sundry art supplies. Then of course there are the photographs and other personal objects. What is so great about the boxes is that the are readily available.