3M Versaflo Tr-3600 Pre Filter Black

3M Versaflo TR-3600 Pre Filter
3M Pre-filter TR-3600, for Versaflo TR-300 PAPR. When installed inside the filter cover of a TR-300 PAPR, the TR-3600 pre-filter can extend the life of the HE filter by capturing large particles that would otherwise clog the HE filter.