I just measured my 2012 L322. It is 49.3 x 92.5 cm. That’s measuring to include the black molding on the edge of the glass, not including the gasket. Straight edge on both front and rear sides, however glass has a bow to align with the profile of the top of the truck. I’m in the US. I would have bet that would not have changed just for production costs, but maybe not so. Good luck finding a replacement.
Hoot