3-in-1 filter features a Medical-Grade HEPA Filter (H13), an Activated Carbon Filter, and a Pre-Filter that captures 99.97% of airborne particles down to .3 microns (and 99% of airborne particles down to .1 microns) eliminating harmful particles like allergens, smoke, and pet dander. The filter typically lasts about 6 months and needs to be replaced to be effective. In the box: one 3-in-1 Medical-Grade H13 HEPA Replacement Filter.
