Review on Amazon Basics Heavy Duty Storage Filing Box 12-Pack - Letter/Legal Size, Lift-Off Lid Included by Renz Alexandria

For a person with thousands of books, storing and transporting them can be problematic. These boxes are suitable for most books, small enough not to become unwieldy heavy when full and strong enough not to fall apart immediately when you try to carry books, and the walls of the box have enough structural strength , even if they are part of the bottom The box in the stack isn't completely full, the weight of all the other boxes of books on the stack won't destroy them (yet fingers crossed lol). However, for long-term storage I would seal the carrying holes to prevent moths or other critters from getting inside.