At 08:31 PM 10/29/2015, Neil2 wrote:
>I noticed a considerable draft exiting from below my Dometic last night and
>wondered if the aggregate here leave it for fresh ventilation or use a
>towel or some such outside on the vent itself to keeper the cabin warmer?

There is no connection between outside and inside, the intake/flue
system starts and ends at the outside fitting and is entirely
sealed.  Your draft must be from sidewall cooling and you're noticing
it because it's confined and has the fridge ventilation openings to
come out of.

Yours,
David