Ford offers carpeted mats for the E450. But if your VIN is used to look them up, the search will come back 'unavailable'. Mainly because of the vinyl flooring. Ford doesn't recommend putting carpeted mats over top vinyl flooring because of safety concerns.
Part# BC2Z-1513086-BA (gray)
Part# BC2Z-1513086-BB (tan)
2013 Jayco Eagle 328 RLTS
2013 F350 6.7L 4x4 CCLB
W/Air Lift air bags (front & rear)
Me, Momma and Charles (RIP buddy)
And introducing Sofie!! ;)