Count the job, not the habit
Heavy lines and removal loads decide the quantity. Everyday single wall does not.
Count the heavy or stacked orders.
Where it lives during that week
Store it apart from single wall. The board looks similar until you lift it.
Order double wall for those goods and single wall for the rest.
The reorder line
Say double wall and the size.
A Packaging Boxes basket with Double wall boxes still leaves the same day if it is placed by 3pm. The terms aim for 5.30pm the next working day. A 1 to 3 day courier is also described, depending on the lines.
Open Double wall boxes when you already know this line. The bundle quantity is on the page. Packaging Boxes will still dispatch an order placed by 3pm on the same day.