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AC Furnace Air Filter
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Product Description

Filter Size: 19x23x4A

Actual Size: 19x23x4

Actual Size Fraction : 19x23x4

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19x23x4A Air Filters

Elevate your indoor air quality effortlessly with our exceptional 19x23x4A air filters, conveniently available for online purchase at Custom Filters Direct. Immerse yourself in a cleaner and healthier living or working environment with these meticulously designed filters that boast an array of features:

Key Features:

  • Precise Dimensions for Optimal Fit: Our 19x23x4A air filters are expertly crafted to the exact size of 19x23x4 inches, ensuring a seamless fit into your HVAC system. This precision promotes optimal air circulation and filtration efficiency, delivering a breath of fresh air to your space.
  • Multiple MERV Ratings for Customized Filtration: Tailor your air filtration to meet your specific needs with our filters, available in MERV ratings 8, 11, and 13. Choose the level of filtration that suits your requirements, providing you with the flexibility to customize your indoor air quality.
  • Extended Lifespan for Cost-Efficiency: Our filters are designed to last up to 90 days, offering a service life three times longer than traditional fiberglass filters. For homes or businesses with pets, children, or allergy sufferers, more frequent replacements are recommended to maintain superior indoor air quality and keep energy costs low.
  • Proudly Made in the USA with Quality Components: Rest assured knowing that all our air filters are proudly made in the USA using 100% American-made components. By purchasing directly from the manufacturer, you not only support local craftsmanship but also enjoy significant savings on a premium product.
  • High Efficiency for Optimal Filtration: Our 19x23x4A pleated air filters are at least 20 times more efficient than fiberglass filters. The filter frames, constructed from durable beverage boards, maintain strength even in humid conditions and temperatures up to 200°F. The synthetic media provides significantly higher particulate efficiency compared to standard cotton media.


Invest in the longevity, efficiency, and superior performance of our 19x23x4A air filters. Enhance your indoor air quality while enjoying the convenience of online shopping with Custom Filters Direct. Take a proactive step towards creating a cleaner, healthier, and more comfortable living or working environment today!