Carton Quantity (or Carton Qty) refers to the number of books that fit in a box for a particular title. The carton quantity can be seen on your Title Details page and when you create a new order.
Carton quantity is helpful because it lets you know how many boxes to expect in your order based on the number of books you order.
The carton quantity tells you the number of books that fit in a box, and you are not required to order this number of books. You can always order as few or as many books as you like.
Carton quantity is usually accurate but not always guaranteed.
In the screenshot below, 16 books fit into one box.