I have been using these boxes for years and they are excellent. They hold up well and maintain their shape even with repeated moves. Even the tops maintain their shape and stay on when the boxes are filled to capacity. The size of the box holds a sufficient amount of file material to be adequate for most purposes but is not so large that even when full to capacity is not still readily movable. These boxes also stack well and the area allowed for labeling is adequate to include several references and cross-references making location of stored material simpler.
Staples calls these "Economy" storage boxes. They "economized" all right -- they neglected to glue down an edge of the box which is supposed to be fixed. Of the boxes in the 10 pack that I purchased the first 5 were okay. The last 5 were defective. If you're going to buy these make sure you have a roll of strong tape on hand so that you can fix the problem -- and hope that the tape will make the box sturdy enough for your needs.
I love these boxes. I can fill them with my yarn stash label what's in them with snips to show the yarn and stack them to the ceiling. Very sturdy for this purpose. They went on sale for $1 a box and I bought 20. Wish I had gotten more.
We are using these boxes for temporary storage and movement of books and papers. They are strong enough to hold a lot of books and papers. We would not hesitate to recommend them to anyone.
We love these boxes. We find them easy to handle. They work really well to store our records from one year to the next as we have to keep our files for at least seven years before they can be destroyed. We have ordered these same boxes for many many years for more than one of our companies and will continue to order them going forward. I would suggest these boxes for any person or company that is in need of a way to store their files and or records as they hold up well and can be stacked and moved around easily.