fb755f6b_United_Boeing_737_900__739__V3__Review
[Seat(s)] 21 C [Class] Economy [Seat Type] Standard & Exit Row [Power] On-Demand TV [Video] AC Power [Review] 
Seat {SEAT} is an Economy Plus seat that has extra legroom due to the Exit Row in front.
SeatGuru Seat Map United Boeing 737-900 (739) V3