OEM#: AFB21.5X23X4M8APK4

PLEATED HVAC FURNACE AIR FILTER, MERV 8, 21.5X23X4, PACKAGE OF 4 by Filterbuy, Inc.

The Filterbuy replacement air filter 21.5x23x4 (actual measurements: 21.50" x 23.00" 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 8 synthetic media (comparable with Clean Living Dust Defense MPR 600 & FPR 5) is recommended in most scenarios due to its capability to trap 90% of airborne particles, protecting your home or business from 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.

• 21.5x23x4 replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 21.50" x 23.00" x 4.00")
• MERV 8 synthetic media (comparable with MPR 600 & FPR 5) protects homes from dust, pollen, and more by trapping 90% 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 21.5x23x4 (actual measurements: 21.50" x 23.00" 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 8 synthetic media (comparable with Clean Living Dust Defense MPR 600 & FPR 5) is recommended in most scenarios due to its capability to trap 90% of airborne particles, protecting your home or business from 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.