well maybe a big piece of circular carpet that rotate like on a salt shaker,
for the hole to line up or not line up... which could be rubber on the under
side... little screen bubbles under the van either way, so bugs dont crawl
in ..

>From: "Phil S." <napszeerf@YAHOO.COM>
>Reply-To: "Phil S." <napszeerf@YAHOO.COM>
>To: vanagon@GERRY.VANAGON.COM
>Subject: Re: Portable Venting...
>Date: Tue, 15 Jul 2003 09:43:13 -0700
>
>What would happen if you had to drive through a big
>puddle that turned out to be alot deeper than you
>thought?
>Some sort of sealable system would be needed in rainy
>areas, rubber sealed valves maybe? Marine Supply could
>be a good start........ For now i hunt and jockey for
>shady trees:)
>
>Phil S. 84 wEsty
>
>--- Mark Dorm <mark_hb@HOTMAIL.COM> wrote:
> > this is my take...
> >
> > drill holes in a large circular pattern on the floor
> > in the rear... like a
> > manhole in size... or larger
> >
> > this becomes your in-take
> >
> > when parked the cool air under the vanagon replaces
> > the hot air that leaves
> > from:
> >
> > lewmar hatches installed behind and slightly above
> > the rear interior lights,
> > both sides - it has a screen you can use to keep
> > mosquitos out - this
> > becomes your out-take - about 14 inches long..
> >
> > all ventilation systems need an in-take and an
> > out-take...
> >
> > in a home this would ideally be at the eaves (in),
> > and the along the length
> > of the roof ridge (out)
> >
> >
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