AIRx 19x20x4BC-DUST | Our#: 176169

19x20x4 AIRx DUST Bryant/Carrier FILXXFNC-0021 Replacement Air Filter - MERV 8, 2-Pack

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AIRx 19x20x4BC-DUST | Our#: 176169

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Enjoy a cleaner home with less work

  • Reduces dust, lint, dust mites, pollen
  • Will help keep your HVAC system clean
  • Maintains superior airflow
  • Creates cleaner indoor air
  • Actual Dimensions: 19 ⅛" x 19 ⅞" x 4 516"

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Product Details

Air cleaner filters reduce indoor air pollutants, allergens and odors. With a MERV 8 rating, this aftermarket replacement filter uses electrostatically charged media to attract and trap airborne particles. Deep pleats securely hold dust, dirt and odors. In the filter, support fingers keep the filter sturdy. The frame resists moisture, mildew, mold and rust. Replace the filter once every six months for clean and healthy indoor air.

  • MERV 8
  • electrostatically charged media and efficient deep pleats reduce airborne dust, dirt and odor
  • support fingers hold the pleats securely in place
  • moisture resistant frame prevents microbial growth
  • change every six months
  • 19” x 20” x 5" nominal size
  • 19-1/8” x 19-7/8” x 4-5/16" actual size
  • aftermarket two pack replaces Bryant/Carrier FILXXFNC-0021
  • same as FILBBFNC0021 and FILCCFNC0021
  • fits FNCCAB-0021 filtration system

Do you want to know about the technical specs?

Nominal Dimensions
19 x 20 x 4"
Actual Dimensions
19 ⅛ x 19 ⅞ x 4 516"
Filter Media
Electrostatically charged 100% synthetic gradient media that does not support microbiological growth
Filter Support Grid
30 gauge galvanized expanded metal grid
Moisture resistant double-wall beverage board
Max Temperature
180F (82C) continuous service, peak 225F (107C)
Max Humidity
Resistant to 100% R.H.

Replaces These Filters:

National Filter Sales:

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!