FORD 2013 E-450 v.2 - Manual (Page 29)

LATCH compatible child safety seats have two rigid or webbing mounted
attachments that connect to the two lower anchors at the LATCH
equipped seating positions in your vehicle. This type of attachment
method eliminates the need to use safety belts to attach the child seat,
however the safety belt can still be used to attach the child seat. For
forward-facing child seats, the top tether strap must also be attached to
the proper top tether anchor, if a top tether strap has been provided
with your child seat.
LATCH lower anchors
Top tether anchors
Your vehicle has LATCH lower and/or top tether anchors at the following
locations:
• Five passenger crew van
28 Child Safety
2013 Econoline (eco)
Owners Guide gf, 2nd Printing, November 2012
USA (fus)