Nordic Pure MERV 14 Air Filters are designed to capture over 90% of airborne particles between 3.0-10.0 microns, effectively filtering out contaminants like lint, dust, pollen, pet dander, mold spores, and particles from coughs, sneezes, and smog. These filters also remove over 90% of finer particles in the 1.0-3.0 micron range and between 75-95% of ultra-fine particles as small as 0.3-1.0 microns, providing exceptional indoor air quality. Constructed with electrostatically charged synthetic materials, each filter includes a sturdy, moisture-resistant frame and reinforced metal mesh for dependable performance in HVAC systems. To maintain peak air quality and HVAC efficiency, replace filters regularly, especially in homes with pets or high traffic.