The Series 1213 Pre-Filter serves as the first line of filtration in the patented HealthyAir® 3-stage air purification process.
This filter should ideally be replaced every 3-4 months*#* depending on the nature and frequency of use.
HealthyAir®Series 1213 eHEPA® Filter
HealthyAir®Series 1213 Activated Carbon Filter
HealthyAir® Series 1213 Pre-Filter