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AC Furnace Air Filter
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Product Description

Filter Size: 20x36x4

Actual Size: 19.5×35.5×4

Actual Size Fraction : 19-1/2×35-1/2×4

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20x36x4 Air Filters

Revitalize the air quality in your indoor space with our exceptional 20x36x4 Air Filters, meticulously designed for optimal performance. Available exclusively online at Custom Filters Direct, these filters are the perfect solution to ensure a constant flow of clean and fresh air in your home or office.

Key Features:

  • Optimal Size for Versatile Use: The 20x36x4 Air Filters are carefully engineered to seamlessly integrate into a variety of HVAC systems, including furnaces, air conditioners, and heat pumps. The nominal size of 20x36x4 ensures compatibility, making them a versatile choice for your air filtration needs.
  • Precision Dimensions for Effective Filtration: With actual dimensions of 19.5×35.5×3.75, these filters offer a precise fit, minimizing air bypass and maximizing their effectiveness. Experience top-tier performance as these filters efficiently capture and eliminate a wide range of airborne particles.
  • Long-lasting Filtration for Your Convenience: Enjoy extended protection with a lifespan of up to 6 months. These filters are engineered for durability, offering consistent and efficient air filtration for an extended period. Say goodbye to the inconvenience of frequent replacements and hello to hassle-free maintenance.
  • Advanced Filtration Technology for Superior Protection: Our 20x36x4 Air Filters are equipped with advanced filtration technology, targeting and capturing an extensive array of airborne particles. Whether it’s dust, pollen, pet dander, or mold, these filters provide superior protection, promoting a healthier indoor environment.
  • Sturdy Construction Ensuring Durability: Crafted with durability in mind, these filters feature a robust construction, including a reinforced frame for structural integrity. The heavy-duty design ensures longevity and resilience, providing you with consistently effective air filtration.
  • Convenient Online Purchase for a Seamless Experience: Enjoy the ease of online shopping with Custom Filters Direct. Skip the hassle of traditional retail and conveniently order your 20x36x4 Air Filters online. Experience the added convenience of doorstep delivery for a seamless and stress-free shopping experience.


Upgrade your air filtration system with the reliability of our 20x36x4 Air Filters. Buy online from Custom Filters Direct and take the first step towards breathing cleaner, fresher air. Order now and experience the transformative difference!