MASK PM 2.5 FILTERS (5 PACK)
- PM2.5 activated carbon filter
- BFE ≥ 95%
- 5-layer construction
- Extra protection with the same meltblown layers that are used in medical face masks
- Perfect fit to our North Original washable fabric face masks
- **Filter re-usability dependent on air quality
- **We recommend replacing your filter every 1 – 2 weeks.