This article will discuss how to choose specific packaging types for specific shipping classes/shipping providers on a fulfillment.
Step One:
You first will need to create an order and create an ACTIVE fulfillment. More on how to create a fulfillment can be found here.
Step Two:
Navigate to the Create/Edit Fulfillment window,

Step Two:
Navigate to the Advanced tab

Step Three:
Here, you can specify the packaging type that the order will be fulfilled with

Select Save and Close. The fulfillment is now ready to be packed and shipped.

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