3M  High Efficiency Particulate Air Filter is designed to suit Powerflow? respirator mask to resist against dusts, mists, fumes and radionuclides. Filter featuring loose-fitting headgear options offer respiratory protection without the need for a tight face seal or suit testing. Features a battery powered blower that extracts the air through the filter q in no additional breathing resistance to the wearer. Filter ideal for lead, asbestos and other hazardous particular gives constant air flow rendering cooling for the worker, delivering great comfort for the wearer.