Originally Posted by
PsiFighter37
Based on UA's website (I don't see an image in your post), that is the long-derided sUA 772 with 2-4-2 seating in the back. I would sit in one of the sections on the side...don't get stuck in the middle.
Bear in mind it could be swapped with the new Polaris configuration, so you might want to check the seats regularly, particularly the last three days before your flight since that's when aircraft swaps happen. And they can happen again at the very last minute (well hour or two before your flight if they're having trouble with the particular aircraft that's supposed to be yours) so keep checking.