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AC Furnace Air Filter
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Product Description

Filter Size: 18x36x1

Actual Size: 17.5×35.5×1

Actual Size Fraction : 17-1/2×35-1/2×1

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18x36x1 Air Filters

Welcome to Custom Filters Direct, your dedicated destination for premium air filtration solutions. Our 18x36x1 Air Filters are engineered to enhance your indoor air quality, and now you can conveniently purchase them online. Explore the key features that set our filters apart:

Product Features:

  • Optimal Size (18x36x1): Precisely crafted to fit 18x36x1 dimensions, our air filters seamlessly integrate into a variety of HVAC systems. This ensures a snug fit, optimizing their performance for effective air purification tailored to your specific needs.
  • Efficient Filtration: Equipped with advanced pleated panel filtering media, our filters efficiently capture a comprehensive array of airborne particles. From common dust and allergens to pet dander and mold spores, experience a noticeable improvement in indoor air quality.
  • Extended Lifespan: Convenience meets reliability with our air filters. Designed to last up to 3 months, they provide long-lasting air purification, resulting in fewer replacements and consistent, dependable performance over an extended period.
  • Enhanced Allergen Capture: Supercharged with pleats, our filters excel at capturing fine airborne allergens. This includes dust, smoke, dander, mold, pet dander, and dust mites. The design acts like a magnet, attracting particulates and contributing to a fresher indoor environment.
  • High Efficiency: Experience a new level of efficiency with our 18x36x1 Air Filters. They are up to 30 times more efficient at capturing allergens compared to ordinary fiberglass filters. This heightened efficiency translates to cleaner air and a healthier living or working space.
  • Uniform Pleat Shape: The uniform pleat shape not only enhances dust holding capacity but also maximizes airflow. This thoughtful design ensures optimal operation of your HVAC system while maintaining excellent air quality throughout your space.
  • Durable Construction: Crafted with a heavy-duty frame, our filters are engineered to withstand regular use. The robust construction prevents airflow bypass, ensuring that air passes through the filter for effective filtration, contributing to a cleaner indoor environment.
  • Online Convenience: Enjoy the ease of online shopping. Purchase our 18x36x1 Air Filters online from Custom Filters Direct and have quality air filters delivered directly to your doorstep, making maintenance a breeze.


Transform your indoor air quality with confidence. Choose Custom Filters Direct for top-notch air filters that provide cleaner, healthier air. Buy our 18x36x1 Air Filters online today and experience the Custom Filters Direct advantage!