AirDoctor MERV 14 HVAC Pleated Filter, 20x30x1, Captures 96% of Pollutants

Minimum efficiency reporting value (MERV) rating of 14 and optimal filtration with no significant restriction of airflow Captures smoke, bacteria, viruses, pet dander, pollen, mold, and removes 96% of particles 1-3 microns in size Compatible with AirDoctor Air Purifier, adding a second layer of protection to your air quality Compatible with HVAC systems that support 1 inch width HVAC filters within the correct filter size, and should be replaced every 3 months