3M Filtrete 20x25x1 Air Filter MERV 11 4-Pack

The 3M Filtrete 20x25x1 Air Filter (MERV 11, MPR 1000) captures airborne allergens and pet dander to help maintain cleaner indoor air. Designed for furnaces and air conditioners, this 4-pack provides reliable airflow and effective filtration for up to 3 months per filter. Ideal for households with pets or allergy sensitivities, each filter fits standard HVAC systems. Actual filter size is 19.68 x 24.68 x 0.81 inches.