The Nordic Pure MERV 14 hypoallergenic pleated air filter is a high efficiency air filter designed to reduce all airborne contaminants in your home or business. This electrostatic air filter attracts and captures airborne dust, pollen, mold spores, pet dander, smog, dust mite debris, smoke, carbon dust, sea salt, and bacteria. The MERV 14 hypoallergenic pleated air filter is made of synthetic material that will not support the growth of mold and bacteria. This MERV 14 high efficiency air filter will attract and capture the small, allergy-aggravating micro-particles that can cause your family discomfort. The Nordic Pure hypoallergenic pleated air filter has a Minimum Efficiency Reporting Value(MERV) of 14 which means that it will collect more than 90-Percent of ALL microns of contaminants. Particles in indoor air are measured in microns, which are 1/1000 of a millimeter. Because of this high filtration and air flow restriction, heating and air conditioner systems should be checked to make sure they can handle filters rated MERV 14 and above.