Spare 4th Stage HEPA Filter 99.9% for MF-350 and MF-550

99.9% @ 0.3 µm

Our Hepa Filter captures sub-micron mist, smoke and bacteria.
Efficiency reaches the standard of 95% at 0.3 micron, with the option of 99% at 0.3 microns.

These Hepa Filters are made exclusively for oil mist with heavy duty micro-glass media in the oil mist separator.
No competitor product holds as much oil or lasts as long. In conclusion, these have a typical life of 2-4 years.