20 X 20 X 4" Commercial Filters

Showing 1 -  4 of 4 Products
20x20x4 AIRx DUST Air Filter - MERV 8, 6-Pack
$24.49 / Filter
$30.61 Save 20%!
6 Pack Selected
$146.94
Ships Free!
20x20x4 AIRx ALLERGY Air Filter - MERV 11, 6-Pack
$26.49 / Filter
$33.11 Save 20%!
6 Pack Selected
$158.94
Ships Free!
20x20x4 AIRx HEALTH Air Filter - MERV 13, 6-Pack
$30.49 / Filter
$38.11 Save 20%!
6 Pack Selected
$182.94
Ships Free!
20x20x4 AIRx ODOR Air Filter - Carbon, 6-Pack
$30.09 / Filter
$37.62 Save 20%!
6 Pack Selected
$180.56
Ships Free!
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What Our Customers Have to Say

Jeannie F. 1 day ago
5
change every 3 months
Vincent C. 1 day ago
5
Everything was as expected. Very prompt delivery Will continue in the future
Nadine M. 1 day ago
5
I have been buying furnace filters from this company since 2018. Filters are good quality and priced much better than what I can find in stores. Shipping is fast. I will continue purchasing filters from Discount Filters Good company
Brian H. 1 day ago
5
great product