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Filters Fast® FF20255X6673M11 Replacement for Lennox X6673 MERV11, 20x25x5 - 2-Pack

$34.98 per Filter
Retail: $99.99
You Save: 30%
Ships in 1 to 2 business days.

Lennox X6673 MERV 11 HCF20-11 Filter Replacement-20x25x5

Retail: $80.99
You Save: 24%
Ships in 3 to 4 business days.
Compare & SaveUse the table below to compare
6 - 12 Months
Filter Life
6 - 12 Months
MERV Rating
Reduces Dust
Reduces Pollen
Reduces Mold Spores
Reduces Pet Dander
Reduces Smoke & Smog
Reduces Allergens
Reduces Bacteria
Reduces Virus Carriers
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Product Information
Filters Fast FF20255X6673M11
Lennox X6673

The Lennox X6673 replacement MERV 11 HCF20-11 HCF20-16 air filter contains a 98% efficient filtration media that can capture particles as small as 0.3 microns before they collect on coils. This Lennox Pleated Filter Media is a high-efficiency alternative to one-inch filters that offers greater dust-holding ability.

Lennox X6673 Filter Specifications:

  • Part number: X6673, DLXX6673
  • Filter dimensions: 20" x25" x" 5" (actual size:19-3/4" x24-3/4" x4-3/8" )
  • MERV 11 Filter
  • Genuine OEM Part

The Lennox X6673 is compatible with select air cleaner model numbers listed below:

Trion Air Bear

  • 453000-001
  • 455602-001
  • 447380-002
  • Supreme 2000


  • MPKA
  • MACA
  • MPKA0020
  • EZXCAB020
  • FILCABCC0020


  • 1067
  • 1024
  • 1032
  • 1038
  • 2010
  • 2044
  • F25A1068
  • F100-1037
  • F150E-1034
  • F200E-1037

Don't forget your Spring and Fall maintenance! To find your local Lennox dealer, click here


Customer Reviews

Total Reviews: 19 | Average Rating: 4.6 / 5.0


Exactly what I ordered and delivery very prompt

Collected by
Diane D2022-09-05

Really good quality

Collected by


Collected by

Great product, easy to install.

Collected by

The filter arrived in poor condition due to being crushed flat in the middle.

Collected by
Linda Sparks2022-04-16

I received my order in just days and was able to get the quality I wanted.

Collected by
Jeffrey Ferguson2022-03-04

Great service

Collected by
Jeffrey Marks2022-02-10

Very pleased with the quality

Collected by
Robert Caragol2022-02-08

Very efficient

Collected by
Steele Kimberly2021-11-17

This filter keeps dust to a minimum,

Collected by
jeff s.2021-11-09

Well , it’s a filter. Fits my Lenox furnace perfectly. Gives me peace of mind

Collected by
Bruce Mathison2021-10-13

Great filters and great value!

Collected by

What I wrote before. Look it up.

Collected by

Great filter. Came quickly.

Collected by

This is the same as the higher priced filters but for a lot less.

Collected by

It has been a fine product.

Collected by
Marsha Failor2021-03-28

The 5 inch filter is great to catch all the allergens in my house. Although I have a new HVAC unit of 2 years, replacing the filters every 6 months is necessary in FL.

Collected by
Jeffrey Marks2021-03-19

Excellent quality filters

Collected by

It's a big filter and works great.

Collected by

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