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AC Furnace Air Filter
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Product Description

Filter Size: 19.75×21.5x1A

Actual Size: 19.75×21.5×1

Actual Size Fraction : 19-3/4×21-1/2×1

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19.75×21.5×1 Air Filters

Revolutionize your indoor air quality with the exceptional capabilities of our 19.75×21.5×1 Air Filters, available for hassle-free online purchase at Custom Filters Direct. Tailored for both residential and commercial use, these filters are meticulously designed to provide unmatched protection against a myriad of airborne particles, creating a pristine and healthy living or working environment.

Key Features:

  • Cutting-Edge Filtration Technology: Our 19.75×21.5×1 Air Filters deliver a robust defense against a variety of airborne contaminants, including pollen, dust, mold, dust mites, bacteria, pet dander, smoke, and viruses. Their versatile 1-inch design ensures compatibility with a wide range of HVAC systems, making them an ideal choice for comprehensive air purification.
  • Crafted in the USA: Immerse yourself in quality assurance as our air filters are proudly manufactured in the United States. Experience peace of mind knowing that you are investing in a product crafted with precision and adhering to stringent industry standards.
  • Unparalleled Effectiveness: Going beyond the limitations of traditional fiberglass filters, our pleated air filters exhibit effectiveness that is at least 20 times greater. Revel in superior filtration performance, providing an extra layer of protection for your indoor air quality that stands out from the ordinary.
  • Robust Heat-Resistant Frames: The frames of our filters are constructed from heat-resistant paperboard with strategically placed horizontal grid supports. Resilient to temperatures of up to 200°F and resistant to moisture, these frames not only ensure a longer lifespan but also thwart microbial growth, surpassing the durability of conventional cardboard frames.
  • Electrostatically Charged Synthetic Polyester Media: Featuring chemical-free air filters with an electrostatically charged synthetic polyester media, our design maximizes surface area through pleating. This ensures the capture of a high number of airborne particles as small as 0.3 microns. Experience top-tier filtration with minimal airflow resistance, guaranteeing that your indoor air remains consistently clean and fresh.
  • Reinforced with Corrosion-Resistant Steel Wire: Elevating durability to the next level, the synthetic polyester media is reinforced with a corrosion-resistant steel wire. This strategic design not only enhances the lifespan of our air filters but also provides a reliable, long-term solution to your filtration needs.


Upgrade your filtration system effortlessly with the 19.75×21.5×1 Air Filters from Custom Filters Direct. Place your online order today and savor the benefits of a cleaner, healthier indoor atmosphere. Immerse yourself in the advanced filtration technology that lets you breathe easier, every day.