USPS Shipping Plugin - Boxes Dimension

[ralfeez]

How does the "boxes dimension" work on the new version of the USPS plugin,  plgvm_alatak_usps_vm2.0.8_1.32 ? I can not find any documentation on it. I am having an issue with USPS showing the wrong box sizes available for shipping even though all of the product dimensions are entered correctly.

Thank you,
Ralph