16x20x1 Pleated Air Filters are meticulously designed to remove Lint, Dust, Pollen, Dust Mite Debris, Mold Spores, Pet Dander, Smoke, and Smog. Pleated air filters use more pleats per square inch in order to provide better airflow than other similar air filters, leading to optimal HVAC heating and cooling system performance and reduced energy and maintenance costs