I made two of them for each sliding window out of 1/8" Plexiglas.
I do not have a digital camera but it looks something like this

Side View
-----------

Top
      |
     /
    /
   /      Window
  /
 /  __
 | /   |

Bottom with drip edge

I used a heat gun to soften the Plexiglas and used a steel edge ruler to
bend it at the right angles. The top and bottom part fit in the grooves of
the window with slight tension. The drip edge makes sure that the rain does
not go in the window groove.
I made a prototype out of cardboard first.
I actually made the cover slightly wider than the window opening.

Front View
------------
 ______
/            \
|             |
|             |
| _____  |
|/_____\ |

Hans Brouwer
Cumberland, Ontario
86 Westfalia
92 Cabriolet

----- Original Message -----
From: "David Wilhite" <dnmwilhite@EARTHLINK.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Thursday, April 18, 2002 9:12 PM
Subject: Sliding Window Vent Covers

> Does anybody know of a vented/louvered cover to put over the sliding
> windows so that you can keep your windows open when it's raining without
> getting soaked?  I noticed that www.eurocampers.com has a set for the
front
> windows, but what about something for the side?
>
> Thanks
>
>
> David Wilhite
> 86' Syncro GL (For Sale)
> 01' KLR 650
> 84' Subaruvanagon