Do it Efficiency Rated Allergen Plus Furnace Filter, 16 x 25 x 1 in. superior air filtration with a MERV 8 efficiency rating, making it 15 times more effective than standard fiberglass filters. This filter effectively removes microscopic particles that can stain walls and furnishings while helping to alleviate seasonal allergies. It provides protection against common allergens such as ragweed pollen, mold spores, dust mite debris, pet dander, and dust/lint. Designed with low airflow resistance, it helps save on energy costs while safeguarding your furnace and air conditioning units. The filter lasts up to 90 days and features a distinctive blue label for easy identification. Model Number: 474282