I guess i was picturing something that would be installed in a slide in pickup camper, after re reading your post you may be trying to heat a topper on a pick up. So it depends on what you are trying to do, but for a small space where you have enough room for it the smallest rv forced air propane heaters available work pretty well. They would be mounted on an outside wall with combustion air and exhaust coming and going to the outside which is ideal.John,
By propane I assume you mean a portable heater (like Mr. Heater)? Are other portable propane heaters that work like the diesel heaters and can be mounted outside?









