Free Shipping Contiguous US | Alaska, Hawaii, Canada: Please Order by Phone. Shipping varies.

need assistance? 1-800-590-0339

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 8 Air Filters 1 Pack

  • Measure your current air filter and compare with the Actual Size of this item to make sure you order the correct filter. See Details below for more info.
  • This item is made to replace the Lennox X6673 and X6675 media air filters
  • MERV 8 air filters capture large airborne particles like lint, household dust, pollen, dust mites, mold spores and other contaminants.
  • Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame.
  • Made in the USA
20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 8 Air Filters 1 Pack
Actual size: 19 3/4 x 24 3/4 x 4 3/8
$28.22 each MSRP $32.48 $ 4.26savings


SKU: 20x25x5LXREDM8-1

Important Note:  Almost ALL furnace filters have a different "actual size" than the nominal size printed on the air conditioner filter. It's best if you measure your air filter for the EXACT size and compare it to our "Actual Size" - and then you can be sure your A/C air filter fits! With the 4" and 5" air filters there is a wider variance between the nominal and actual size depending on the manufacturer. We also carry 4 7/8 and 5 1/4 inch depth filters, this is why we ask you to compare the exact dimensions.

Nordic Pure 20x25x5 Lennox X6673_X6675 Replacement MERV 8 rated air filters are what is considered the traditional 5” filter at an actual 4 3/8”. It can replace not only Lennox but Honeywell, Carrier, and Bryant air filters. Of course, this is just a list of the most well-known systems that use this size. You should always measure your current filter or the housing to make sure the actual size correlates with the filter you are ordering. Each time air passes through a Nordic Pure pleated furnace filter, lint, household dust, pollen, dust mites, pet dander, bacteria, mold spores and other contaminants are removed. All Nordic Pure pleated air filters are manufactured using a heavy duty, moisture resistant beverage board frame. There is a metal mesh support grid bonded to the pleats for extra support. Our AC filter media prevents the growth of bacteria or mold, resulting in a much healthier living environment.

MERV 8 furnace air conditioner filters are comparable to HVAC filters with the rating of MPR 1000 or a rating of FPR 6. This high-performance HVAC replacement filter will outperform non-electrostatic fiber-glass filters, washable filters, poly disposable filters, and will help keep your air conditioning and heating systems running efficiently, saving money on utilities and costly maintenance.

The effective life of your AC air filter depends on both the inside and outside conditions in which you live.  It is important to regularly change your furnace air conditioner filters especially during any home improvements for fresh, clean air in your home or office. We recommend that you change your air filter every 3-6 months to maintain maximum efficiency and economy.


20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 8 Air Filters 1 Pack

Name 20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 8 Air Filters 1 Pack
Width 20
Height 25
Filter Thickness 5
Actual Size of Air Filter 19 3/4 x 24 3/4 x 4 3/8
Actual Size 19 3/4 x 24 3/4 x 4 3/8 (19.75x24.75x4.38)
Media Type MERV 8
Box Quantity 1
Brand Nordic Pure
Manufacturer Nordic Pure
Model HCC20-28, HCF20-10
Lead/Handling Time 5
Replacements X6673, X6675, HCC20-28, HCF20-10
UPC 848224124139

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 8 Air Filters 1 Pack