Nordic Pure MERV 8 Air Filters are designed to remove 70-85% of airborne particles measuring 3.0-10.0 microns, including lint, dust, pollen, pet dander, and mold spores. Constructed with electrostatically charged synthetic materials, these filters effectively enhance indoor air quality without overly restricting airflow. Each filter features a sturdy, moisture-resistant frame and metal mesh support for reliable performance in HVAC systems. For best results, replace 1-2 inch filters every 30-90 days and 4-6 inch filters every 3-6 months, with more frequent changes in high-traffic or pet-filled environments.