The Guardian Technologies Replacement Filter B is a combination filter that incorporates multiple layers of filtration including: a pre-filter, charcoal filter and true HEPA filter, to help improve indoor air quality.
It is recommended that the filter be replaced every 6–9 months depending on use.
This is a GENUINE GermGuardian Filter. It is important to only use genuine Guardian Technologies replacement parts to maintain product performance and warranty. All parts that are not genuine will void the warranty.