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AC Furnace Air Filter
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Product Description

Filter Size: 18x22x1

Actual Size: 17.5×21.5×1

Actual Size Fraction : 17-1/2×21-1/2×1

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18x22x1 Air Filters

Elevate the quality of air in your living or working space with our meticulously designed 18x22x1 Air Filters, available for convenient online purchase exclusively at Custom Filters Direct. These filters are crafted to provide not just clean air but a healthier living environment. Explore the outstanding features that make our 18x22x1 Air Filters the ultimate choice:

Key Features:

  • Filter Size: 18x22x1 | 1-Inch Filter: Engineered with precision, our 18x22x1 Air Filters offer an exact fit for your HVAC system. This ensures optimal performance and efficient filtration, tailored to the specific dimensions of your space. Upgrade to a filter that complements the unique needs of your home or business, promoting cleaner and fresher air circulation.
  • Protection From Various Contaminants: Safeguard your surroundings against a multitude of contaminants, including pollen, dust, mold, dust mites, bacteria, pet dander, smoke, and viruses. The 18x22x1 Air Filters serve as a robust barrier, providing comprehensive protection for both residential and commercial settings.
  • 20 Times More Effective: When compared to conventional fiberglass filters, our 18x22x1 pleated air filters demonstrate effectiveness that is at least 20 times greater. Invest in a superior filtration solution that outperforms traditional options, delivering optimal air quality for your unique space.
  • Made in the US: Trust in the quality of our products, as all our air filters are proudly manufactured in the USA. Benefit from superior craftsmanship and reliability, ensuring that your indoor air purification needs are met with a product crafted with precision and care.
  • Durable Construction: The filter frames are meticulously crafted from heat-resistant paperboard with horizontal grid supports. Resistant to temperatures of up to 200°F and moisture, these frames not only exhibit durability but also resist microbial growth, outperforming traditional cardboard frames.
  • Chemical-Free, Electrostatically Charged Synthetic Polyester Media: Our advanced filtration media is pleated to maximize surface area, capturing particles as small as 0.3 microns with minimal airflow resistance. The electrostatic charge enhances efficiency, while a corrosion-resistant steel wire provides robust support, ensuring prolonged durability.


Upgrade your air filtration system with confidence and convenience. Purchase the 18x22x1 Air Filters from Custom Filters Direct today and immerse yourself in the transformative difference of superior air quality. Breathe cleaner, live healthier – make the choice for optimal indoor air purity now!