Power so big that batteries would be too big to carry on the fan, the EX550 is capable of producing 3.2 hp from standard 120/240 VAC supply due to its 400 VDC BrushlessPPV motor, with no peak inrush current to blow circuit breakers. This fan revolutionizes the PPV category at only 56 lbs, output of 14,000 cfm, and a footprint identical to the EX50Li battery fan! A true gamechanger for fire departments employing ventilation tactics in larger structures where only gas-powered PPV fans could do the work before.