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    MERV 11 Replacement for Ruud 21x21x4.5 (20.75x20.75x4.38) RXFH-E21AM10, RXFH-E21AM13

    Actual Size: 20.75x20.75x4.38"

    https://filterbuy.com/media/cache/3a/b1/3ab178efd38bd3cf4e4390db2a6544f4.jpg
    $216.00
    $400.44
    in stock
    Ships in 24 hours
    Quantity Discount
    1 for$66.74 ea2 for$41.69 eaSave 38%3 for$39.58 eaSave 41%4 for$38.87 eaSave 42%5 for$37.42 eaSave 44%6+ for$36.00 eaSave 46%
    SUPERIOR AIR FILTRATION
    SUPERIOR AIR FILTRATIONRESIDENTIAL AND/OR COMMERCIAL USEChange Every 3 Months

    ABOUT

    • This is a list 21 X 21 X 4.5 MERV 11 air filter replacement for your furnace, air conditioner, heat pump, or HVAC system
    • Actual air filter size: 20.75x20.75x4.38"
    • MERV 11 synthetic media (comparable with MPR 1000/1200 and FPR 7) offers superior protection from dust, pollen, pet dander, mold, smog and more by trapping 95% of airborne particles without impacting air flow
    • High-quality construction means electrostatically charged pleated filter media, reinforced wire backing for structural integrity, and a durable frame to resist heat and humidity
    • Built to last 3 months. 300% longer than fiberglass models
    • 100% manufactured in the United States and designed with recyclable materials
    • Learn more about 21 X 21 X 4.5 Air Filters