A:Answer I've been reading through the manual to see what color to paint the wall (It has different settings but doesn't give an exact pantone), anyway, it can go any size, there is a table showing sizes on page 67 of the manual, and it goes up to diagonal length of 301 inches. However, on page 74 in the additional information section it says these two things
Optimized wide 80inches
Optimized projector distance 2.2meters
On the table on page 67 in the manual 80 inches isn't listed, but it looks like that would work out to about 93.25 inches diagonally, and the picture would be about 45.7 inches tall.
Also, if you google projector screen paints there is good information about painting a wall rather than purchasing a screen so you could make the screen bigger or a preferred size if you wanted.