Aerostar Series 400 Pleated Furnace Air Filter 18x20x1 MERV 10 Standard Capacity

The Aerostar Series 400 pleated furnace air filter is designed to improve indoor air quality while maintaining efficient and consistent airflow throughout your HVAC system. Constructed with advanced 100% synthetic filter media, it effectively captures airborne particles including dust, pollen, mold spores, lint, and pet dander for cleaner, healthier indoor air.

With a MERV 10 efficiency rating, this pleated air filter delivers enhanced filtration performance while maintaining low airflow resistance. The durable pleated construction provides increased dust-holding capacity, supports efficient HVAC operation, and helps protect system components from dirt and debris accumulation.

Perfect for residential and commercial HVAC systems, this 18x20x1 furnace filter is recommended for replacement every 1 to 3 months depending on system usage, indoor air quality, and environmental factors such as pets, allergies, and seasonal dust levels.