3M N-95 Particulate Pre-Filter 5N11 Used with 501 Filter Retainer 10 per Box

The 3M 5N11 Prefilter is a N95 filter for use with a 501 filter retainer. N95 filters are for use with toxic dusts or mists containing no oil. They are most often used as a prefilter for non-oil based paints or pesticides. Sold in boxes of 10.