Filtrete AC Furnace Air Filter 21.5x21.5x1 4-Pack

The Filtrete 21.5x21.5x1 AC Furnace Air Filter is designed to trap pollen and dust while maintaining strong airflow. Featuring a MERV 8 rating and MPR 700, this pleated 1-inch electrostatic air filter comes in a convenient pack of four with an actual size of 21.19 x 21.19 x 0.81 inches. Ideal for residential HVAC systems, it provides up to three months of air cleaning performance. Suitable for anyone looking to improve indoor air quality with easy filter changes.