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20x21x1A – Merv 13

20x21x1A – Merv 13
AC Furnace Air Filter
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Product Description

Filter Size: 20x21x1A

Actual Size: 20x21x1

Actual Size Fraction : 20x21x1

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20x21x1A MERV 13 Pleated Air Filters

Upgrade your indoor air quality effortlessly with our premium 20x21x1A MERV 13 pleated air filters, available for convenient online purchase at Custom Filters Direct. These meticulously crafted filters are designed for optimal air filtration, catering to both residential and commercial spaces.

  • Versatile Use for Residential and/or Commercial Spaces: Suitable for various settings, these air filters are ideal for use in residential homes, commercial establishments, furnaces, air conditioners, heat pumps, and HVAC systems. Experience superior air quality in every environment.
  • Efficient Replacement Every 3 Months: Ensure consistent performance by changing your 20x21x1A MERV 13 air filter every three months. This routine maintenance helps maintain optimal filtration efficiency for a cleaner and healthier indoor atmosphere.
  • Precise Dimensions for Perfect Fit: The actual air filter size is 20x21x1 inches, ensuring a perfect fit into your HVAC system. This precision promotes maximum air circulation and effective filtration without compromising airflow.
  • MERV 13 Synthetic Media for Advanced Filtration: Our air filters feature MERV 13 synthetic media, comparable to MPR 1500/1900 and FPR 10 ratings. This high-efficiency media offers superior protection by trapping 98% of airborne particles, including dust, pollen, pet dander, mold, smog, bacteria, and virus-carrying particles.
  • High-Quality Construction for Longevity: The electrostatically charged pleated filter media, reinforced wire backing for structural integrity, and a durable frame resist heat and humidity. Built to last for three months, these filters outlast fiberglass models by 300%, providing reliable and extended air purification.
  • Proudly Manufactured in the United States with Recyclable Materials: Trust in the quality and environmental consciousness of our filters, proudly manufactured in the United States with recyclable materials. By choosing our filters, you contribute to both local craftsmanship and sustainability.


Elevate your indoor air quality today with Custom Filters Direct. Purchase our 20x21x1A MERV 13 pleated air filters online for a transformative difference in the air you breathe.