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