I bought these Basic Duty document boxes strictly for temporary storage of the contents of my two filing cabinets. The documents will be in these boxes for only a month while I move. Once the movers bring the filing cabinets to my new place the documents will go right back where they were filed originally. The boxes are easy to set up and easy to label with their contents "Drawer 1" etc but they are not great for stacking with heavy contents nor for really long term storage of heavy stuff. I use the Staples "Heavy Duty" boxes for storage of heavier items where I want to stack the boxes long term.