al-SHIELDS Adult Unisex PM2.5 Filters
The PM2.5 name comes from these filters’ original use as protection against Particulate Matter 2.5, the smallest and most dangerous form of air pollution.
- Can reduce airborne particulates by as much as 90%
- Five-layer protection
Dimensions: 7.75 Inch x 5 Inch x 1.5 Inch