18x20x4 Filters

Showing 1 -  2 of 2 Products
18x20x4 AIRx DUST Air Filter - MERV 8
$23.61 / Filter
$29.51 Save 20%!
6 Pack Selected
$141.64
Ships Free!
18x20x4 AIRx ALLERGY Air Filter - MERV 11
$25.21 / Filter
$31.51 Save 20%!
6 Pack Selected
$151.25
Ships Free!
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What Our Customers Have to Say

David P. 1 day ago
5
I love them.
Julia 1 day ago
5
I have bought these in the past and continue to be pleased with them.
KELLY T. 1 day ago
5
GREAT PRODUCT
Robin 1 day ago
5
We were told by our furnace guy that the flat filters were better than pleated for the furnace, and we are very happy with the flat filters that we purchased.