AIRx 16x25x5HW-LX-MAX | Our#: 201375

MERV 16 Replacement for Lennox X6672 Filter - 16 x 25 x 5

AIRx 16x25x5HW-LX-MAX | Our#: 201375

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The ultimate indoor air quality solution

  • Most efficient filter available for residential applications
  • Captures over 95% of airborne allergens down to 0.3 microns
  • Long service life and low pressure drop
  • Actual Dimensions: 15 ¾" x 24 ¾" x 4 ⅜"

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Product Details

MERV 16 replacement for Lennox X6672. This compatible product combines super-efficient MERV 16 filtration with an odor removing, activated carbon media coating. Cartridge can last up to one year, though product replacement life cycle depends on the individual conditions and needs of your home. 

  • Highest rated filter available for residential systems: MERV 16 
  • Value-priced alternative to OEM product
  • Removes OVER 95% of particles ranging in size down to 0.3 micron
  • Removes OVER 90% of bioaerosols and microorganisms down to 0.01 micron
  • Replaces part number HCF16-16 and catalog number X6672
  • Fits HCC16-28 Healthy Climate True Fit Cabinet
  • Interchangeable with Honeywell FC100A1029 or FC200E1029 and Carrier FILXXCAR0016
  • Nominal Dimensions: 16" x 25" x 5"
  • Actual Dimensions 15 3/4" x 24 3/4" x 4 3/8"
  • Note: this product is not manufactured by Lennox

All product names, logos, brands, trademarks and registered trademarks are property of their respective owners. All company, product and service names used on this page are for identification purposes and for demonstrating compatibility only. and National Trade Supply, LLC are not affiliated with these brands.


Do you want to know about the technical specs?

Nominal Dimensions
16 x 25 x 5"
Actual Dimensions
15 ¾ x 24 ¾ x 4 ⅜"

Replaces These Filters:

National Filter Sales:

Fits In These Systems:


Lennox® and Healthy Climate® are registered trademarks of Lennox International Inc.. National Trade Supply, Inc, and AIRx are not affiliated with Lennox International Inc.

How to change your furnace/air-conditioner/HVAC air filter

Estimated time: 10 minutes or less


  1. Determine the location of your filter

    Your forced air system will be similar, whether or not it is a heating (furnace) or cooling (AC) system – or both. The furnace filter housing/slot is located right next to the heating/cooling system’s air handler or blower. Your filter(s) may also be located in a return grille on the wall or ceiling of your home.

  2. Determine the type/size of filter that you use

    Typically, the dimensions or part number of the filter will be printed on the filter frame. Use this information to order a new filter.

  3. Purchase a new air filter from

    Visit and purchase a new filter. Use our filter finders to verify the correct match.

  4. Remove the old filter

    Turn off the power to the heating/cooling system and remove the old filter from its housing/slot and discard.

  5. Insert the new filter

    Pay attention to any airflow direction arrows printed on the frame of the new filter. Install the filter by sliding it into the filter housing/slot with the airflow arrow pointing towards the blower. If installing the filter in a wall or ceiling grille – the airflow arrow should point towards the wall or ceiling. Turn on the power to the forced air system.

    Enjoy cleaner air!