Row 7 is not an emergency exit row; only 8.

Unfortunately, UA is using this plane for somewhat longer flights than JFK-IAD, so you are lucky.

The only other good thing about row 8 is that you might find an empty seat next to you slightly more often than other rows. At least that's my experience. Several times, the only empty seat on the plane is next to me in row 8.

It is a crummy plane.