Hi,
I draw combustion air up 400mm, along about 500mm and then into the heater. I can plug the intake if driving in dusty conditions, though I can disconnect the plumbing easily to check for dust but have found no ingress todate.
There is no filter/muffler on the inlet.
The exhaust is a mirror image of the inlet, going to the other side of the camper, but through a supplied muffler.
Cheers
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