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20x20x4 Air Filter

Purchasing a 20x20x4 air filter shouldn't be a hassle. Air Filters Delivered makes it easy to find the 20x20x4 filters you need for your home or office AC or furnace. We offer 3 MERV options, whether you need protection from dust, lint, pollen, dust mites, and mold, or require stronger filtering of smoke, smog, pet dander, viruses, bacteria, and more. All orders are shipped free and qualify for our price match guarantee.
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    Pleated | MERV Rating 8
    20 x 20 x 4 Basic MERV 8 Pleated Air Filter
    Get your First Filter Free with Auto Delivery
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    • Actual Size: 19 1/2" x 19 1/2" x 3 3/4"
    • Product #: P80S.042020
  • Home Plus

    Pleated | MERV Rating 11
    20 x 20 x 4 MERV 11 Pleated Air Filter
    Get your First Filter Free with Auto Delivery
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    • Actual Size: 19 1/2" x 19 1/2" x 3 3/4"
    • Product #: P15S.042020
  • Home Ultimate

    Pleated | MERV Rating 13
    20 x 20 x 4 MERV 13 Pleated Air Filter
    Get your First Filter Free with Auto Delivery
    View Terms and Conditions
    • Actual Size: 19 1/2" x 19 1/2" x 3 3/4"
    • Product #: P25S.042020
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