3M Versaflo(TM) Prefilter TR-6600 / 37354 (AAD), for TR-600 PAPR 50/case

The TR-6600 prefilter can extend the service life of the particulate (HE) element of TR-600 series filters and cartridges by capturing large particles that may otherwise clog the HE filter. Frequent prefilter changeout may help optimize PAPR system performance.