3M3M Versaflo TR-3600 Prefilter (Pk of 10) 3M Prefilter TR-3600 is for the Versaflo TR-300 PAPR and comse in a pack of 10. When installed inside the filter cover of a TR-300 PAPR, the 3m prefilter TR-3600 can extend the life of the HE filter by capturing large particles that would otherwise clog the HE filter.
Product #: TR-3600
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