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