3M  Versaflo TR-305N PAPR System with standard belt and economy battery offers great protection from particulates and certain nuisance odors. Assembly contains TR-302N PAPR unit, TR-370 filter cover, TR-325 belt, TR-330 battery, TR-341N battery charger kit, TR-3710N HE filter and a TR-3600 pre-filter. It is used for automotive, food and beverage industries, manufacturing, transportation and more.