5,000 count card storage box question
 

Im looking to move most of my modern topps cards back into 5,000 count storage boxes. My question is does anyone know how many 5,000 count boxes (they are heavy) I can stack on top of each other where it won’t damage the cards below. Im thinking maybe 2-3 boxes? What do you think?

I've seen some card shops where they are stacked as high as a standing adult. So I assume a few will be absolutely fine.

I’ve had no problems with 5 foot tall stacks for years