>| I made an insert for the driver's window the length of the window and
>| about 6"
>| wide out of 2" thick styrofoam (heavy duty) and formica (sandwiching the
>| styrofoam) for the exhaust vent.  I drilled a hole in it and permanently
>| attached the exterior vent contraption (kind of like the one for the
>| refridgerator) to the insert.  When I use the heater, i just lower the
>| driver's
>| side window, insert the insert and close the window on it to make a
>| tight
>| seal.  then i connect the vent hose from the heater to the exhaust port
>| on the
>| insert.

        I believe such an exhaust scheme could be used with the propex in
the short term as well. Maybe two temp inserts would be needed to handle both
intake and exhaust - one for driver's window and one for rear opening window
behind the driver's seat...

dave