20x25x1 MERV 11 Pleated AC Furnace Air Filters. 6 Pack. Made in USA.

Actual Size: 19-1/2 x 24-1/2 x 3/4. Filter Rating: MERV 11, FPR 7, MPR 1000. MERV 11 Specifications: Effectively reduces pollen, dust, pet dander, mold spores, dust mites, bacteria, smoke, smog, and other allergens from the air in your home or business. Supercharged electrostatically enhanced media. Specifically manufactured for system applications requiring improved medium efficiency, non-shedding filtration media. MERV 11 (Minimum Efficiency Reporting Value) based on ASHRAE Test Standard 52.2-2012 Pleat configuration: Formed into aerodynamic, semi-tapered, wedge-shaped pleats expanding its capability to capture contaminants. Suggested to change at least every 3 Months Made in the United States