In a message dated 15/05/2008 10:05:34 A.M. Central Standard Time,
LISTSERV@GERRY.VANAGON.COM writes:

As far  as putting a fan in the city water port, that will help exhaust some
of the  hot air, but for me, it was not worth it due to dust and water
intrusion.  The flap outside does not seal completely, so if you choose to
put a fan  there, you may want to redesign the flap, too.

No  problem on my install !  I sealed all around the fan housing with
Fiberglas  insulation.  The only path in and out is through the fan.  When the  fan
is stopped and the flap closed there is no chance of anything getting  in
there.

Cheers,

Frank  Condelli
Almonte, Ontario, Canada
'87 Westy & Lionel Trains (_Collection for sale_
(http://members.aol.com/Fkc43/trainsal.htm) )
_Frank Condelli &  Associates_ (http://members.aol.com/Fkc43/busindex.html)
- Vanagon/Vanagon Westfalia Service in the Ottawa Valley
_Vanagon Stainless Steel Exhaust  Systems_
(http://members.aol.com/Fkc43/exhaust.htm)
_BusFusion_ (http://members.aol.com/BusFusion/bfhome.htm)  a VW Camper
camping event, Almonte, ON, June12 ~ 15,  2008