You can buy the Picade without a screen!
So the screen mount kit has been designed to be as universal as possible.
This means you can fit screens right down from 4", all the way up to 12" (bevel dependent). If your screen is less than 264mm width than it should fit in.
For any screen that you supply you would have to create a custom shim to go round the edge, however you can just use black card and some scissors.
If you find a screen that works feel free to post it!