21½ x 23½ x 1"

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21.5x23.5x1 AIRx ALLERGY Air Filter, 6-Pack
$17.49 / Filter
$21.86 Save 20%!
6 Pack Selected
$104.94
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21.5x23.5x1 AIRx ALLERGY Air Filter, 12-Pack
$16.49 / Filter
$20.61 Save 20%!
12 Pack Selected
$197.88
Ships Free!
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What Our Customers Have to Say

Suzanne P. 1 day ago
5
I've been using these filters for a couple of years now because they fit perfectly in my furnace and while I don't find much relief from dust, they do as well as any other filter I've tried.
Tom E. 1 day ago
5
Great product
James E. 4 days ago
5
I have two return air vents that I inspect and change as needed and these filters are the best value for my money.
Arnol L. 5 days ago
5
Quality filter