Filtretre Allergen Healthy Living 1550 MPR Furnace Filter, 20" x 20" x 1" is designed to deliver high-performance filtration for your HVAC system. Featuring a Microparticle Performance Rating (MPR) of 1550, this filter efficiently captures a wide range of particles including dust, bacteria, viruses, and allergens, helping to improve the air quality in your home. By proactively removing these unwanted particles, it promotes a cleaner and healthier living environment for you and your family. This filter is an excellent choice for anyone looking to enhance indoor air quality. For results, replace the filter regularly according to the manufacturer's instructions to maintain optimal performance and continuous air purification. Model Number: 2002-4-HR