• Spend $70 or more and your order ships free! We'll get your filters out the door fast so you can enjoy clean air and water.*

    * Orders under $70 ship for $5.99.

  • Shop with confidence! If you're not completely satisfied with your purchase, you have up to one year to return it for a refund or exchange. We stand behind every filter we sell.

    Learn More

  • Every order is carefully packed and shipped by our team in Indiana. Your purchase helps support American jobs and hardworking families right here in the Midwest. Our AIRx Furnace / AC Filters and ClearChoice Fridge Filters are made in the USA.

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  • Spend $70 or more and your order ships free! We'll get your filters out the door fast so you can enjoy clean air and water.*

    * Orders under $70 ship for $5.99.

  • Shop with confidence! If you're not completely satisfied with your purchase, you have up to one year to return it for a refund or exchange. We stand behind every filter we sell.

    Learn More

  • Every order is carefully packed and shipped by our team in Indiana. Your purchase helps support American jobs and hardworking families right here in the Midwest. Our AIRx Furnace / AC Filters and ClearChoice Fridge Filters are made in the USA.

Cart 0

We don't know what's in your water,
but we know there's nothing in your cart.

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20 X 20 X 4" Standard Filters

NOTE: Please compare the actual size of your current filter with the actual sizes listed on our site. A nominal 20" x 20" x 4" filter can be different actual sizes depending on the brand of your air cleaner.
Showing 1 -  7 of 7 Products
20x20x5 AIRx DUST Honeywell FC100A1011 Replacement Air Filter - MERV 8, 2-Pack
$39.98 / Filter
$49.97 Save 20%!
20x20x5 AIRx ALLERGY Honeywell FC100A1011 Replacement Air Filter - MERV 11, 2-Pack
$49.98 / Filter
$62.47 Save 20%!
20x20x5 AIRx HEALTH Honeywell FC100A1011 Replacement Air Filter - MERV 13, 2-Pack
$59.98 / Filter
$74.97 Save 20%!
20x20x4 AIRx DUST Air Filter - MERV 8, 6-Pack
$24.99 / Filter
$31.24 Save 20%!
20x20x4 AIRx ALLERGY Air Filter - MERV 11, 6-Pack
$27.83 / Filter
$34.79 Save 20%!
20x20x4 AIRx HEALTH Air Filter - MERV 13, 6-Pack
$32.17 / Filter
$40.21 Save 20%!
20x20x4 AIRx ODOR Air Filter - Carbon, 6-Pack
$33.33 / Filter
$41.66 Save 20%!
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What Our Customers Have to Say

Robert S. 1 day ago
5
Took awhile to get them but I wasn’t in an emergency so the wait wasn’t a problem. The filters fit perfectly.
Yolanda 1 day ago
5
The filters I bought were fine--unfortunately they won't fit in my vent casing. While the casing dimensions are 12"X24", there's a ridge @ 1.5" inside the casing that is smaller than the 12X24" initial dimension so the filters I was using before actually were slightly different, the outside 2@X24 to fit in the opening of the casing vent but the filter itself @4" in depth, were maybe 11"X23". I haven't damaged the filters and can return and also can send a picture of the vent casing and the inside dimensions. Thanks, Dennis LeVan
Linda B. 1 day ago
5
Ordered 6 pack which was cheaper.
John 2 days ago
5
Works well easy to install