Optional H13 HEPA + Carbon Filters for the Mold Guard (MG-100).  These filters add additional particulate control (H13 HEPA) and odor/chemical control (Activated Carbon).  

These filters should be replaced on average every 1-3 months for optimal efficacy.

The HEPA side of the filter should be inserted facing up or “out”.  The darker Carbon side of the filter should face down or “inside” the unit.  The HEPA will capture particles first, then VOCs will be absorbed by the carbon. You can also watch a quick video on how to install these.