Filtrete 20" x 25" x 5" Allergen, Bacteria & Virus Furnace Filter by 3M is designed to provide superior filtration for a cleaner and healthier indoor environment. This advanced furnace filter effectively captures and removes up to 97% of large airborne allergens such as pollen, mold spores, and dust mite debris, helping to improve air quality and reduce respiratory irritants. Its electrostatically charged construction also traps microscopic particles including dust, smoke, and smog, ensuring fresher air throughout your home. Featuring a deep pleat design, this filter a larger surface area for extended filtration capacity and durability, with a period of up to 12 months to maintain optimal performance and a healthy living space. Model Number: NDP03-5IN-2