Air filters protected with an anti-microbial additive for industrial and commercial use in the purification of air and the removal of contaminants such as particulates, gases, odor, aerosols, or pollutants; air filters for industrial installations; air filtering units for filtering harmful contaminants in the air; air filtering units; air cleaning units; air filtering installations; air purification units; filters for general industrial and commercial use in the antimicrobial purification of ...