3 microns and is capable of cleansing the air for areas up to 1500 square feet

9% effective at capturing particles like pollen

The motor is easily accessed via the hood

Width: 12 in

Austin Air Allergy Machine Replacement Filter Best Seller 3 microns and is capable[custom_html] This is a replacement filter for the Austin Air Allergy Machine. Austin Air has constructed this filter with those individuals suffering with allergy affliction in mind. The filter contains military grade technology in the form of its High Efficiency Gas Absorbing (HEGA) media. HEGA filter media is combined with true medical HEPA filtration to remove chemical gas contaminants and 99. 97% of airborne particles larger than 0. 3 microns.