An option to link product with specific shipping box so when checking out, shipping logic use that relation to calculate shipping
We are running into a challenge. here are details.
Product X box size 5 x 5 x 5 inch
Box A - size can fit 4 product X
Box B - size can fit 50 product X
so when we choose 5 products, USPS shipping uses Box B instead of QTY 2 of Box A.
Box B shipping cost is way higher than 2 boxes of Box A