AirVita 400F – Replacement HEPA Filter
1 x 3-in-1 filter
(Pre-filter + 99.50% HEPA Type filter + Granular Activated Carbon Filter)
The Pre-filter blocks out large dust particles such as pollen, pet dander etc. The small dirty particles that passes thru the HEPA filter is then being trap before it passes thru the carbon filter which will remove gaseous pollutants and odors.