I haven't flown EK Y in a looong time , with the exception of 1 short flight - so this may be wrong, but IIRC...the video monitor boxes are under the middle 2 seats of the centre block, but affect all 4 seats (DEFG) - because they are protude into D/G's legroom.

Also, I think there is a box between the AB and JK seats.


Cheers