That's clearly incorrect.
This one looks more accurate to me though I do think 11" tall can't possibly be correct for a 1/4 scale either. Even with the figure stooped over, the height of that backdrop should probably hit at least 16".
In fact, I see now it's obviously incorrect, as the width is also listed (more realistically) at 11". So yeah, probably somewhat close to 20" tall given those proportions.
I had planned to make the upcoming Hawkman my swan song for a while.
This one is seriously tempting though.