Nominal size is 20x20x2. Actual size is 19.5 X 19.5 X 1.75. MERV 8 Rating. Protects homes from dust, pollen, and more by trapping 75% of airborne particles without impacting air flow. Each filter lasts up to 3 months. Electrostatic charge captures airborne allergens Traps most large allergens including pollen and lint.
