Keep your furnace system running its best by replacing the filter every 3 months. When it's time to replace the air filter in your home furnace, trust this 24-pack of the Filti 7500 Pleated Home HVAC Furnace Filter Replacement to keep your air clean, clear, and breathable. These replacement filters are Filti part number 7500. Prioritize the upkeep of your home and show off your handiness. These replacement filters will have no trouble filling your home with clean, breathable air. These replacement air filters measure 30 inches tall, 20 inches long, and 1 inch thick. Designed to keep your air clean, these air filters are rated at MERV-13 efficiency, filtering out dust, pollen, pet dander, smoke, and other airborne particles. These air filters also sport state-of-the-art nanofiber technology, which captures ultrafine pollutants and acts as additional reinforcement. Breathe easier in your home by replacing an old or dirty air filter with this 24-pack of the Filti 7500 Pleated Home HVAC Furnace Filter Replacement.