Does any one know what the limit is for stocked normal Shelf in a tent?

I know of the current vending limitations:

4 stocked Coin Machine
2 stocked Food Shelf
6 stocked Fortune Egg

Just to be clear. These limitations are for STOCKED equipment. For example: I know you can have as many Coin Machine as you want, but only a total of 10 stacks of items can be sold on them.

So, If I have 2 stocked Coin Machine, 2 stocked Food Shelf, and 6 stocked Fortune Egg how many stocked Shelf can I add to tent?

Thank you,

Spoiler:

Level 156 fire
T4
90% of the laws are made because of 10% of the people.