Per, the black-louvered vents in the rear pillar go directly into the
engine box.  It appears to me that they are really intakes, not exhausts.
The exhaust vents for the cabin are at the lower rear inside of driver and
passenger door (forward is open, I think).  I think this man is talking
about vents possibly installed through the glass of the rear windows?

david

At 00:34 3/30/99 +0200, you wrote:
>If you are referring to the vents just behind/incorporated in the rear
>windows, my opinion is that they don't work at all. When the fan is
>running at position #3, there is really a high pressure in the van, but
>hardly any air comes out of these vents. Of course, they can be filled
>with dust, there is some foam in them, but still.....
>
David Beierl - dbeierl@ibm.net