In section 109, the double-letter rows are closer to the stage and the front of the section than single letter rows. For a traditional end stage concert at Philips Arena, Section 109 will have a total of 31 rows of seating, running from Row BB at the front, to Row U at the very back.

View from Section 109 Row HH at Philips Arena
This view from Section 109 Row HH is near the front of the section, while the single lettered rows are located further towards the back