The dimensions of the board itself aren't important, as long as it fits well behind your armor. The only critical part would be the spacing between the red LED (bars) across the top and the alphanumeric characters on bottom. Unless someone here can provide it for you, the experts at TDH (such as Braks) can give you that info. As an estimate, my boards are roughly 2 x 2.5 (maybe 3) inches.
Sorry it wasn't much help, but as mentioned on the other board, there really aren't any hard specs to hold to for the board layout/dimensions.
ATM
ShackMan
