RB1200 board dimensions

What are the physical dimensions of the RB1200 board itself? I’m wanting to put it into a box smaller than a standard rack size.

Board: 135 mm x 291 mm

Extract from userguide http://routerboard.com/pdf/353/rb1100ug.pdf

I did not know the 1200 and 1100 were the same board.

125x217mm

Thanks, Normis.