Frame and Impeller: Plastic(94V-0),PBT Bearing Type: Sleeve bearing & Ball bearing Function Range: FG RD PWM reversible IP58 IP68 Leadwire: Red Wire Positive(+), Black Wire Negative(-) Operating Voltage: 12V 24V 48V Tempetature Range: -200C to +700C Motor: Impedance Protected and Reverse Polarity Protected Bearing Type B.S: B.S Rated Voltage VDC: 48 Operating Voltage VDC: 28.0-56.0 Input Current Amp: 0.40 Input Power Watt: 19.20 Speed RPM: 3500 Max Air Flow CFM : 144.21 Max Air Flow  m3/min: 4.08 Max Static Pressure Inch-H2O: 0.50 Max Static Pressure pa: 124.25 Noise dB-A: 53.00 Weight g: 262.00