20x25x2 MERV 11 Pleated AC Furnace Air Filter - 4 Pack 2" Inch Depth Filters | ACTUAL SIZE: 19-1/2 x 24-1/2 x 1-3/4 | 20x25x2 AC Furnace Air Filter MERV 11 - 4 Pack Effectively reduces pollen, dust, pet dander, mold spores, dust mites, bacteria, smoke, smog and other allergens from the air in your home or business. Pleat configuration: Formed into aerodynamic, semi-tapered, wedge-shaped pleats expanding its capability to capture contaminants. MERV 11 (Minimum Efficiency Reporting Value) based on ASHRAE Test Standard 52.2-2012 Made in the USA