PM2.5 N99 Activated Carbon Filter Insert 5 Layers Protective Filter (5 Pack)
- Larger than the standard filter for more coverage
- REPLACEABLE ACTIVE CARBON FILTERS
- SIZE: 3.5" x 4.75"
- Recommend replacement of 1-2 times a week.
- 5 Pack = 5 Filters.
- Ideal for washable masks
- Disposable supplies cannot be washed.