Primary HEPA filter with efficiency rating of 99.97% against 0.3 micron oily aerosol particles, combining filtration efficiency and large capacity. To maximize HEPA filter life, be sure to change the pre-filters whenever the accumulation of dust or debris is visible.
Dri-Eaz® DefendAir® Primary HEPA Filter, 99.97 % Filter Efficiency, Oily Aerosol Particle Final Resistance
| Filter Efficiency | : | 99.97 % |
| Final Resistance | : | Oily Aerosol Particle |
- HEPA 500 filters combine fine particle capture with filter capacity
- Replace pre-filters whenever dust and debris accumulation is visible
- Replace HEPA filter when change light turns on
- The HEPA filtration standard was originally developed in the 1940s to control radioactive dust particles in U.S. nuclear laboratories