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AC Furnace Air Filter
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Product Description

Filter Size: 21×23.25x2A

Actual Size: 21×23.25×2

Actual Size Fraction : 21×23-1/4×2

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21×23.25×2 Air Filters

Improve the air you breathe and create a healthier living or working space with our exceptional 21×23.25×2 Air Filters, available for convenient online purchase directly from Custom Filters Direct. Engineered with precision, these filters go beyond mere filtration—they are designed to enhance air quality and deliver an extended lifespan for optimal convenience.

Key Features:

  • Precise Fit for Optimal System Performance: Crafted with an actual size of 21×23.25×2″, these filters guarantee a precise fit for your HVAC system. Customize your air filtration experience by choosing from MERV ratings 8, 11, or 13, allowing you to tailor the level of filtration to meet your specific needs.
  • Proudly Made in the USA: Trust in the reliability of our filters, proudly manufactured in the United States. This commitment reflects our dedication to upholding rigorous manufacturing standards and supporting domestic production, ensuring a product of superior quality.
  • Extended Lifespan for Uninterrupted Comfort: Engineered to last up to 90 days, our filters offer three times the lifespan of traditional fiberglass filters. This extended longevity not only provides a hassle-free experience but also proves to be a cost-effective solution by minimizing the frequency of replacements.
  • Customized Filtration Options for Tailored Solutions: Choose from MERV ratings 8, 11, or 13 to customize your air filtration according to your specific requirements. Whether you have pets, children, or allergy sufferers in your home or business, these options empower you to address unique concerns effectively.
  • Enhanced Efficiency for Cleaner Indoor Air: These 21×23.25×2 pleated air filters surpass conventional fiberglass filters, offering at least 20 times more efficiency. Experience a discernible improvement in air quality as these filters capture a higher percentage of airborne particles, including dust, pollen, and allergens.
  • Durable Construction for Consistent Performance: Constructed with filter frames made from beverage board, these filters exhibit strength and durability even in high humidity and temperatures up to 200°F. The synthetic media used in these filters provides significantly higher particulate efficiency compared to standard cotton media, ensuring reliable and consistent performance.
  • Optimal Replacement Frequency Advice for Proactive Maintenance: For homes or businesses with pets, children, or allergy sufferers, we recommend more frequent filter replacements. This proactive approach ensures the maintenance of superior indoor air quality and helps keep energy costs low.


Upgrade your air filtration system with confidence and ease. Purchase the 21×23.25×2 Air Filters from Custom Filters Direct today, and immerse yourself in the enduring benefits of superior filtration and an extended filter life. Breathe easy, knowing you’ve invested in a reliable solution tailored to enhance the air quality in your specific environment.