A:Answer It's the small liner. The oven photo shows the pan is 6.25-inches across. But, I don't know if that's the top or bottom measurement since I don't own this model.
However, liners are paper or silicone, so they're easy to reshape or go further up the wall. I also use Parchment Paper, in which I fold the paper over the food but not tightly wrap it, so the airflow may still cook the food.