Versatility is the the 18E's claim to fame. It can operate on 208V or 240V, single phase or three phase. Be advised, you need to buy the 18E in either single phase, or the three phase model. Furthermore, there are four heat settings to cater to any application: fan only for ventilation, 13kW, or 18kW. This heavy-duty units boasts 65,000 BTU/Hr in its 18kW state, and pumps heat over a large area with its 590 CFM fan.
For heating, drying, and ventilating    
    

• Integrated ambient thermostat from 32°F – 100°F
• Overheat protection at 104°F       
• Works on 208V       
• BTU    65,000 BTU   
• Watts    18,000 Watts   
• Volts / Amp    240 Volts / 81 Amps   
• Phase    Single      
• Thermostate    32 F to 100 F   
• Airflow    590 CFM       
• Weight    62 lbs       
• Power Cord    Not Supplied   
• Plug Type    Not Supplied