“Name”:”fedex_pak”, “Type”:”BOX”
Postmen has the validation for the Box Type and below is the list of valid box types for fedex carrier.
custom
fedex_10kg_box
fedex_25kg_box
fedex_box
fedex_envelope
fedex_extra_large_box
fedex_large_box
fedex_medium_box
fedex_pak
fedex_small_box
fedex_tube