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