All the side planks are secured to the vehicle by 10mm nuts on fancy brackets which can be accessed from the underside of each plank, once you have undone them a couple of turns,,,,,,pull the plank out away from the van alittle, then push the plank up parrallel to release them .
It is a good idea to try it with the door plank first as these are only held with 2 brackets (if they are genuine items),,,,,so you know how to get the big ones off with out breaking any .
Regards
Fritz,,,,,
One day you will find me,,
Driving in my Camper,
With a Surf and Paisley wrap on both sides....