Not too severe, a few minor items is all but the owner complained that during the recent hot ( ) spell whilst on their hols it got hot in the van and they had no opening window at the rear?
I beg to differ

Bit closer look

All they had to do was poke a bit of fallen branch in there....
Anyhow a few moments later and the window about drops out..

leaving a nasty little bit of nothingness and rust.

Now I could remake this lot but the time involved and the fact that the cover location is not that secure to the nothingness is just cause to fit this..

Well not all of it, thankfully after viewing it was decided to obtain the aforesaid panal and this was procured from a local source, so will chop the rot out and then undo this panal and let it in.
Mike