You know what? I never bothered to even look at the graph on the top left of that picture. As I play around with the frequencies now, I can tell by the graph that the bottom EQ value does do shelving. And the top EQ does the same thing, but with the upper frequencies (I don't know if it's still called a shelf when you're talking about frequencies going UP as opposed to DOWN).
Thanks for the reply.
To answer your question, it goes up to 1.6 kHz.