Replacement filters for koi Style No. A159 masks. This includes replaceable 3-layer PM2.5 activated filters with a BFE > 95%.
- Multi-layer filtering with a Bacteria Filtration Efficiency (BFE) > 95%
- Filters out finer dust bacteria and other harmful particles
- PM2.5 filter: polypropylene non-woven
- Compatible with koi style A159 mask (Heather Grey, Heather Galaxy, Heather Azalea Pink) (sold separately)