Oddly enough - Depending on the market, European plywood is sold as 125x250 cm sheets, but when you measure them they can be a bit larger.

When you measure them - they're exactly 4 x 8 feet as if they were for Americans.

It's also why you find a lot of 10mm 13mm and 19mm bolts that suspiciously also fit 7/16 1/2 3/4 inch sockets.