20x25x4 Standard Filters

NOTE: Please compare the actual size of your current filter with the actual sizes listed on our site. A nominal 20" x 25" x 4" filter can be different actual sizes depending on the brand of your air cleaner.
Showing 1 -  8 of 8 Products
20x25x5 AIRx DUST Honeywell FC100A1037 Replacement Filter - MERV 8, 2-Pack
$40.95 / Filter
$51.19 Save 20%!
2 Pack Selected
$81.90
Ships Free!
20x25x5 AIRx ALLERGY Honeywell FC100A1037 Replacement Air Filter - MERV 11, 2-Pack
$43.95 / Filter
$54.94 Save 20%!
2 Pack Selected
$87.90
Ships Free!
20x25x5 AIRx HEALTH Honeywell FC100A1037 Replacement Air Filter - MERV 13, 2 pack
$59.95 / Filter
$74.94 Save 20%!
2 Pack Selected
$119.90
Ships Free!
20x25x5 AIRx ODOR Honewell FC100A1037 Replacement Air Filter - Carbon, 2-Pack
$45.95 / Filter
$57.44 Save 20%!
2 Pack Selected
$91.90
Ships Free!
20x25x4 AIRx ALLERGY Air Filter - MERV 11, 6-Pack
$28.49 / Filter
$35.61 Save 20%!
6 Pack Selected
$170.94
Ships Free!
20x25x4 AIRx HEALTH Air Filter - MERV 13, 6-Pack
$37.49 / Filter
$46.86 Save 20%!
6 Pack Selected
$224.94
Ships Free!
20x25x4 AIRx ODOR Air Filter - Carbon, 6-Pack
$33.64 / Filter
$42.05 Save 20%!
6 Pack Selected
$201.83
Ships Free!
Lennox Model X6675 MERV 16 Replacement Filter - 20 x 25 x 5
$169.90 / Filter
$212.38 Save 20%!
1 Pack Selected
$169.90
Ships Free!
1 

What Our Customers Have to Say

Amy B. 1 day ago
5
Quality material made it very easy to install. Price was very fair. Packaging and delivery were excellent. Have ordered from Discount Filters for several years and continue to be completely satisfied with ordering, shipping and receiving!
Neena 1 day ago
5
Discount filters offers great service when I need to replace my furnace filters. I replace the filters every 3 months generally ordering six filters from discount filters at a time. That's there's a for my need. They're efficient courteous and reasonable when I contact then
Neena 1 day ago
5
I change the air filters every 3 months and discount filters is my supplier. They shipped their quality products quickly and accurately. This time when I ordered the wrong filter dimensions, the lady I was talking with pointed out that I needed a different size. She saved me from ordering the wrong thing! The filters work great and are much better priced than the equivalent ones available locally.
Sergey M. 1 day ago
5
A+++++++++