Shipping envelope for HP inkjet cartridges
(holds up to 6 inkjet cartridges without packaging)
U.S. Postal Service pre-paid envelope (no label required)

Collection box for HP inkjet cartridges
(Holds 20 - 300 inkjet cartridges w/o packaging or up to 10 HP large format or Edgeline ink cartridges. Dimensions: 12"x10"x15")
UPS pre-paid label is included

https://h30248.www3.hp.com/recycle/s...e1.asp?__cc=us