propman 47×6×4
So said the dimensions on the end of the box!!
With the USPS, any fraction of an inch over, is counted as the next full inch, bear in mind. What the box says, and even what we measure, is (most times) not correct by USPS measuring, at P.O. ALWAYS add an extra inch, on every dimension, when measuring, to assure you are 'under' the limit for cu. in.. 'Bulges', count at the P.O. !
Currently, I am using boxes that are marked 10x6x4. I enter them as 11x7x5.
And please, do not ask how I know these things!! 😉