useful for letter or legal files. also turns out to be a good fit for a lot of other things so makes a good general purpose storage container. very modest unit cost so good for applications requiring a lot boxes that have to stack neatly. perforations are not alway cut clean through and does not accommodate hanging folders well.
I use these for personal storage. Durability is fine but when assembling the boxes the perforations to tear where needed were not deep enough so the corrugation seperated in various spots....a little "chinchy". I would recommend but with "warning".
We are packing to make a move and having to store some items. These are durable and a great size to pack and stack and when full are easy to carry. TWO THUMBS UP!!!!!!