Sections 320-327 and 348-355 make up club level seating behind the baskets. Each of these sections contains more than 20 rows with row A at the front of each section.
When looking at tickets for the 2016 Men's Final Four, prices in these sections are comparable to 500 level seating in the corners. If deciding between those seats and these, consider the following: The seats are lower down to the court, but the sections are larger. So you'll have a slightly crisper view of the game, but you may have to walk extra stairs to get to and from your seats.
Though these sections are located on the club level, they do not receive any special amenities.