Free Shipping

No minimums, no surprises — we ship every order for free! We’ll get your filters out the door fast so you can enjoy clean air and water without paying extra.
1 Year Purchase Guarantee

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.

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Shipped with Care from Indiana, USA

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.

Free Shipping

No minimums, no surprises — we ship every order for free! We’ll get your filters out the door fast so you can enjoy clean air and water without paying extra.
1 Year Purchase Guarantee

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
Shipped with Care from Indiana, USA

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.

18x20x4 Filters

Name: DiscountFilters.com
Address: 2011 Southtech Drive, Suite 100, Greenwood, IN, 46143, US

Showing 1 - 2 of 2 Products

$23.61 / Filter

$29.51 Save 20%!

Ships Free!

$25.21 / Filter

$31.51 Save 20%!

Ships Free!

What Our Customers Have to Say

Lloyd C. 1 day ago

I have not been able to find this size in any store. Discount Filter had it.

Julie O. 1 day ago

A+ Excellent service and excellent product!

Ronald f. 2 days ago

I need new ones

Aaron 2 days ago

This product works as well as the original.