Product details:

Hvac filters micro allergen size 16 inches x 20 x 1 Helps reduce allergens and microscopic particles from the air in their homes. MPR 1000 captures large airborne allergens like household dust, pollen, and mold spores. Attracts and captures microscopic allergens like pet-dander, smoke and smog particles. L asts up to 3 months. Only Filtrete filters carry the American Lung Association Health House Logo.