The Stealth 350 is our highest-performance and most efficient booth. With a 333% increase in horsepower, compared to the 250 series, this makes the Stealth 350 our fastest performing booth. And don't forget the 60% increase in lighting, for that detailed perfection. Lastly, the 1,000,000 BTU heater will expedite your drying cycle by 400% (as opposed to chemicals)! Air enters the fully-filtered ceiling plenum and is exhausted through the filtered floor plenum.