Dimensions Of Flat-Earth Claims?

I've seen a number of claims by zetetic flat-earthers, but none of them offer any specifics regarding their models. Does anyone know of any claims that give specifics about the actual dimensions of their version of the universe? Specifically, I'm looking for the size of the flat Earth, the sizes of the Sun and moon, and their distances above the surface of the Earth.

Not that I don't suspect a reason for their ambiguity.

via International Skeptics Forum http://ift.tt/1Jf4GVE