A blower unit is connected to the motor to draw air from {HEAD ~ the inlet} to {TAIL ~ the outlet} 
A blower unit is connected to the motor to draw air from { HEAD ~ the inlet } to { TAIL ~ the outlet }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL