Bulk pack of eighty replacement 3M? Adflo? pre-filters (part number 836080).
The Adflo pre-filter extends the life of the particle filter
Clean pre-filter extends the battery run time of your 3M? Speedglas? Adflo? respirator
Regularly inspect your pre-filter for any damage, clogging or breakthrough
Do not attempt to clean the pre-filter
Replace once to twice a week depending on use
For use with the Adflo respirator system and Speedglas? welding helmet or 3M? Versaflo? M-Series face shield
If you also require particulate filters, see part number 837080 (pack of 80) or 837010 (each).