12x20x1 (11.75 x 19.75) Arm and Hammer(TM) Max Allergen Air Filter

Arm and Hammer(TM) Max Allergen Air Filter Unscented odor fighting power. Technology aimed at removing allergens and odors from the air. Designed to trap airborne particles pollen, dust, pet dander, mold spores, and microscopic allergens plus odors and smoke. Filter last up to 90 days.