Larry is correct, please don not block the air intake of the Propex EX 1800.
Ultimately, one should build a protection grid around the air intake, for
those that still tend to store objects on top of the heater, there is an
upgraded intake cover plate that deletes the holes at the top of the heater,
and has enlarged intake holes in the side portion. These are free of charge
to those Propex owners wishing one. Another point mention was the exhaust
pipes still bringing combustion gases inside: If your heater has been
installed correctly, with the exhaust tubing directed to the outer lip of
the body and your slider door seal in good shape, there is no danger of CO
poisoning. Any questions feel free to email me directly, I am currently off
the daily mailings of this list.

Karl Mullendore
Westy Ventures
3333 Gapland Road
Gapland, MD 21779
ph: 301.432.4645

 -----Original Message-----
Volks,

Respectfully ... I must challenge a small portion of Bob's posting.

"He says you can pack stuff right on top of it because the air is drawn
from the outside and the heat generated by the unit is exhausted to the
outside."

PLEASE DO NOT DO THIS!!!!!!

Depending on the age of the unit ... It will have vent hole either on
the side and top or if a newer unit on one side only.

DO NOT BLOCK THESE VENT HOLES.

Also it "Might" be a good idea not to pack stuff too tightly around the
rubber heater hose.

I did both of these things after Karl installed my Propex although he
told me not to) and almost had a bad situation.

My smoke alarm awoke me one night to a Smoke Filled Van.

The Propex had overheated, was melting the rubber hose and generating a
great deal of smoke and fume.

Karl ... Perhaps you could add your point of view here.

BTW .. After one year of usage ... The Propex is a great heater that I
HIGHLY RECOMMEND.