Patroni From Luxembourg, joined Aug 1999, 1403 posts, RR: 14 Reply 1, posted (11 years 9 months 3 days 9 hours ago) and read 1174 times:
the width of the 744 upper deck should be about the same as the normal Economy configuration is 3-3, just like the 737/757 standard.
Due to the fact that the upper deck's ceiling is closer to the outer skin of the aircraft (compared to the main deck where there's still plenty of space above the ceiling), the cabin has a more rounded shape and is not as high inside. You also sit further away from the window compared to the main deck. There are also no overhead baggage bins. I remember once flying on the upper deck of a BA 747-100 and they had the bag bins between the window seat and the wall.