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    11.5x21x4 MERV 13 Pleated Air Filter

    Actual Size: 11.5x21x4"

    https://static.filterbuy.com/static/images/filter-images-by-shape/Long Rectangle/MERV 13/4 INCH/LongRectangle_4inch_MERV13_6pack.jpg
    $138.48
    $264.06
    in stock
    Ships in 24 hours
    Quantity Discount
    1 for$44.01 ea2 for$27.50 eaSave 38%3 for$26.05 eaSave 41%4 for$25.33 eaSave 42%5 for$24.37 eaSave 45%6-11 for$23.08 eaSave 48%12+ for$21.85 eaSave 50%
    OPTIMAL AIR FILTRATION
    OPTIMAL AIR FILTRATIONRESIDENTIAL AND/OR COMMERCIAL USEChange Every 3 Months

    ABOUT

    • This is a list 11.5x21x4 MERV 13 air filter replacement for your furnace, air conditioner, heat pump, or HVAC system
    • Actual air filter size: 11.5x21x4"
    • MERV 13 synthetic media (comparable with MPR 1500/1900 and FPR 10) offers the best protection from dust, pollen, pet dander, mold, smog, bacteria, and virus carrying particles by trapping 98% 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 11.5x21x4 Air Filters