There are 2 configurations for this plane:
1. 408 seats in 3 classes.
2. 482 seats in 2 classes.

Upper deck for both configurations
Platinum (Business) class with 6 rows, 2 seats on each side (A,C - H,K). Rows are 72-74 and 77-79 with row 77 being the exit row. There are 3 lavs in the upper deck - 2 in front on the right side, one in the back on the righ side.

Lower deck - on the 3 class configuration:
First class - 2 rows in the front cabin (rows 2-3), seats A,C and H,K.
Platinum class - 4 rows in the 2nd cabin (between the 2 doors) - rows 10-13. Seating 2-3-2 - A,C - D,E,F - H,K. There are 2 lavs in front of row 10 - 1 on each side.
Coach - 3 cabins - rows 21-32, 34-44 and 45-60. Seating 3-4-3 - A-C, D-G, H-K. Rows 21-24 run allong the galley so there are no D-G seats there.
Rows 57-60 have only 2 seaters next to the window (B,C and H,J).
Exit rows - 21, 34-35 (row 34 is missing the A and K window seats - similar to a 737 exit row configuration) ans 45.
There are 10 lavs for coach passengers - 4 in the center area between rows 32 and 34 and 6 in the back.


Lower deck - on the 2 class configuration:
All coach !!!
2-2 seating in the front row (2) and 3-3 seating in the rest of the front cabin - rows 3-8.
3-4-3 seating in the rest of the plane. 2nd cabin - rows 10-16. There are 2 additional lavs behind row 16.
The rest of the cabin is similar to the other configuration.