A filter reduces airborne particles as air is forced from the inlet to the outlet by {HEAD ~ operation} of the motor and {TAIL ~ blower} 
of
A filter reduces airborne particles as air is forced from the inlet to the outlet by { HEAD ~ operation } of the motor and { TAIL ~ blower }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL