This Airtronic D5 is a high output (18,800 btu's) diesel operated forced air heater. Four thermostatically controlled heat levels and btu outputs from 4100 - 18,800 btus
This Airtronic B5 is a high output (18,800 btu's) gasoline operated forced air heater. Four thermostatically controlled heat levels and btu outputs from 4100 - 18,800 btus
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