Mark I stage piano dimensions

[Atuuri]

I'm currently having my 1975 Mark I stage piano refurbished by vintage vibes. I've in the meantime decided to make a new hardwood case for it.

Can anyone give me the inside dimensions of a Rhodes Mark I stage piano?

I'm sure vintage vibes will get me the numbers when they start working on my piano, but I'd like to start working on it right away.
 

[Atuuri]

~Also, I know that there are Sketch-up files I could use, but I don't have a computer with a graphics card the will run Sketch-up