Marquee / Header standard sizes

[Arm123]

What’s a standard / most common size for a marquee / header ?  I know that different games had different sizes, but if you had to choose.  What size would you make yours ?

[Green Giant]

However wide your machine is and about 8 inches high.

I think mine was something like 26 x 8.  This really only matters if you are building your own and haven't cut the dimensions yet for the top of the cab.