Soleus Air A-SA-150 HEPA/Carbon Replacement Filter for SA-100 & SA-150R Air Purifiers HEPA filter removes airborne irritants such as pollen grains, dust, tobacco smoke, mold spores and pet dander from the air. Two active carbon filters absorb odor Front grill snaps off for easy filter replacement No tools required Each box contains 1 HEPA and 2 Active Carbon Filters