Filtretre Allergen, Bacteria, and Virus 1550 MPR Furnace Filter, 16" x 25" x 4" is designed to deliver high-performance filtration for your HVAC system. This furnace filter effectively captures large airborne allergens such as pollen, mold spores, and dust mite debris with a 97% capture rate. It also traps microscopic particles like dust, smoke, and smog, thanks to its electrostatically charged filter media. Featuring a deep pleat design, it a larger surface area that improves airflow and filtration efficiency. With proper maintenance, this filter can last up to 12 months, helping to significantly enhance your home's indoor air quality by reducing allergens, dust, smoke, and other particles. Model Number: NDP01-4IN-4