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18x20x0.5 – Merv 11

18x20x0.5 – Merv 11
AC Furnace Air Filter
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Product Description

Filter Size: 18x20x0.5A

Actual Size: 18x20x0.5

Actual Size Fraction : 18x20x0.5

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18x20x0.5 MERV 11 Pleated Air Filters

Invest in cleaner, healthier air for your living or working space with our high-quality 18x20x0.5 MERV 11 Pleated Air Filters, available for convenient online purchase exclusively from Custom Filters Direct. These filters are meticulously designed to provide efficient particle capture, ensuring a fresher and more comfortable indoor environment.

Key Features:

  • Superior Filtration Performance: Our 18x20x0.5 MERV 11 Pleated Air Filters offer advanced filtration, comparable to MPR 800 / 1200. The electrostatically charged synthetic media efficiently captures airborne particles, including dust, pollen, pet dander, mold, and more, trapping up to 95% of particles without compromising airflow.
  • Universal Compatibility: Designed for compatibility with HC HVAC or furnace systems, these filters boast a nominal size of 18x20x0.5 inches, ensuring a perfect fit. Experience the convenience of easy installation and enhanced air quality in your space.
  • A Cleaner Indoor Environment: Goodbye to airborne contaminants such as dust, pollen, pet dander, mold spores, and others. Particularly advantageous for allergy sufferers and households with children, our MERV 11 Pleated Air Filters improve indoor air quality by fostering a cleaner environment.
  • Long-Lasting Performance: Enjoy the convenience of extended usage as these filters are built to last. For optimal results, change the filter every 60 to 90 days during normal times, and consider more frequent changes (every 30 days) during peak summer and winter months.
  • Moisture-Resistant Construction: The moisture-resistant clay-coated frame ensures durability even in humid conditions and temperatures up to 180°F (81°C). The pleated design provides a larger surface area for improved air coverage, greater capture capacity, and extended filter life.
  • Energy-Efficient Technology: Benefit from low initial resistance that requires less energy consumption. This results in lower operating costs, making our MERV 11 Pleated Air Filters an energy-efficient choice for your HVAC system.
  • Environmentally Friendly: Manufactured in the United States with recyclable materials, these filters align with eco-friendly practices, allowing you to make a responsible choice for both your indoor air quality and the environment.


Upgrade your air filtration system today by adding the 18x20x0.5 MERV 11 Pleated Air Filters from Custom Filters Direct to your cart. Breathe in the freshness and experience the transformative benefits of superior air quality in your indoor space.