Back in my Woodworking Show days Tormek came to me on 80 x 120 pallets. When you load/unload a truck every Thursday/Sunday it doesn't take long to figure out the value of standardization. US pallets are all over the place in size, always out of sync with any other pallet, never fitting together across the box of a truck or trailer. 80 x 120s fit 2 across or 3 parallel. I got to the point we required everyone that we hauled for to use my pallets.They are part of the standard euro pallet form factor.
(20x30) -> 30x40 -> 40x60 -> 60x80 -> 80x120 (https://en.wikipedia.org/wiki/EUR-pallet)