Ford TRANSIT CUSTOM Owner's Manual page 21

ISOFIX Child Seats
Seating positions
Rear ISOFIX second row
ISOFIX size class - second row
Rear ISOFIX third row
ISOFIX size class - third row
IU Suitable for universal category ISOFIX child seats approved for use in this mass group.
*
As defined by ECE-R16.
Note: When you are purchasing an ISOFIX child seat, make sure that you know the correct
mass group and ISOFIX size class for the intended seating locations.
Child Safety
0
Up to 22 lbs (10
kg)
Baby safety seat
IU
E
*
IU
E
*
19
Mass group categories
0+
Up to 29 lbs (13
kg)
IU
C, D, E
IU
D, E
I
20 - 40 lbs (9 -
18 kg)
Child safety
seat
IU
A, B, B1, C, D
IU
A, B, B1, D