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21 x 21 x 1"

   

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  1. 1" Max-Aire® Gold Permanent Furnace Filter
    1-Pack
    N/A
    N/

    Max-Aire® Gold Furnace Filters

    • Free Ground Shipping
    • Lifetime warranty
    • 3 layers of filtration
    • Washes with warm water
    Learn More
    $79.95

  2. 1" Accumulair® Carbon Odor-Block Furnace Filter
    4-Pack
    N/A
    3

    1" Accumulair® Carbon Odor-Block Furnace Filter

    • Free Ground Shipping
    • 4 furnace filters per case
    • Lasts up to 3 months
    • Great for smoke, paint, and pet odors
    Learn More
    $58.70

   

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