Do it Efficiency Rated Allergen Plus Furnace Filter, 15 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 furnace 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 or lint. Designed for low airflow resistance, this filter helps save on energy costs while ensuring your furnace and air conditioning units are well protected. It has a lifespan of up to 90 days and features a distinctive blue label. Model Number: 448037