OEM#: AFB21.5X23.25X4M11APK6

PLEATED HVAC FURNACE AIR FILTER, MERV 11, 21.5X23.25X4, PACKAGE OF 6 by Filterbuy, Inc.

The Filterbuy replacement air filter 21.5x23.25x4 (actual measurements: 21.50" x 23.25" x 4.00") ensures that your furnace, air conditioner, heat pump, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 11 synthetic media (comparable with Micro Allergen Defense MPR 1000 - 1200 & FPR 7) is recommended if you have pets or allergies due to its capability to trap 95% of airborne particles, protecting your home or business from smoke, smog, debris, lint, pollen, mold, dander, and other forms of dust without impacting air flow. High quality construction features an electrostatically charged design with 10 pleats per foot that captures more harmful particles and prolongs the products lifespan by three times that of fiberglass models. Plus, our industrial grade beverage board frames are paired with dual wire backings that significantly outperform traditional cardboard compositions by improving structural integrity with their ability to endure temperatures up to 200 degrees Fahrenheit and withstand exposure to moisture. Installation is also made simple with the addition of easy-to-understand arrows that help identify the direction of air flow and subsequently the way the filter needs to be placed. To top it off, all our components are 100% manufactured within the United States and designed with recyclable materials, providing an eco-friendly alternative to enhancing your air quality.

• 21.5x23.25x4 replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 21.50" x 23.25" x 4.00")
• MERV 11 synthetic media (comparable with MPR 1000 - 1200 & FPR 7) protects homes from pets, allergies, and more by trapping 95% of airborne particles without impacting air flow
• Electrostatically charged, pleated filters capture more harmful particles, last 3x longer than fiberglass models, and are 100% manufactured within the United States
• Industrial grade beverage board (recyclable) frames with dual wire backings improve structural integrity and outperform standard cardboard designs

The Filterbuy replacement air filter 21.5x23.25x4 (actual measurements: 21.50" x 23.25" x 4.00") ensures that your furnace, air conditioner, heat pump, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 11 synthetic media (comparable with Micro Allergen Defense MPR 1000 - 1200 & FPR 7) is recommended if you have pets or allergies due to its capability to trap 95% of airborne particles, protecting your home or business from smoke, smog, debris, lint, pollen, mold, dander, and other forms of dust without impacting air flow. High quality construction features an electrostatically charged design with 10 pleats per foot that captures more harmful particles and prolongs the products lifespan by three times that of fiberglass models. Plus, our industrial grade beverage board frames are paired with dual wire backings that significantly outperform traditional cardboard compositions by improving structural integrity with their ability to endure temperatures up to 200 degrees Fahrenheit and withstand exposure to moisture. Installation is also made simple with the addition of easy-to-understand arrows that help identify the direction of air flow and subsequently the way the filter needs to be placed. To top it off, all our components are 100% manufactured within the United States and designed with recyclable materials, providing an eco-friendly alternative to enhancing your air quality.