The foot stool area of 15 K and 16 K...
This is 15K (and A but strangely not EF which are 'normal like all the others) which has a reduced length and width compared to other foot areas due to (I'm guessing) the storage cabinet that is in front of the seat.
This is 16K (and every other seat but 15 AK in the aft cabin)...full length and width for the foot coffin area. Won't be too critical in seat mode but in sleep mode (bed) 15AK will limit the space available if the person sat here is tall, meaning 6'1" or taller.
