The Honeywell 7580 is a P100 particulate filter (with 99.97% minimum filter efficiency) for all particulates.
780P100 Particulate Filter
$27.00
Replacement filter. Sold in pairs.
The general rule for filter replacement is to leave the contaminated area and dispose of the filter if it becomes damaged, soiled, or breathing becomes difficult. Even if none of these things happen, it’s recommended to dispose of filters after 40 hours of use or 30 days, whichever comes first.
