Hi Salvo,
Thank you for using the Support Forum. Please take a look at the paper and paper tray specifications solution in the online support for your machine. You will find all the measurements there.
Wow! I was struggling with Xerox's paper types and weights tables, expressed in grammage (gsm), in the User Guide. Fortunately, for a novice like me, I stumbled into a great app, from Case Paper, that converts between basis weight and grammage (among other features) for various paper grades. I am not affiliated with Case Paper, but I sure do appreciate them.