AIRx 20x26x5WR-ALLERGY | Our#: 174280

20x26x5 AIRx ALLERGY White Rodgers FR2000-100 Replacement Air Filter - MERV 11

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AIRx 20x26x5WR-ALLERGY | Our#: 174280

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Reduce common allergy symptoms

  • Reduces allergy irritating particles
  • Captures allergens like dust, mold spores, pet dander, dust mite debris and more
  • Lessens odors from car fumes & smog
  • Creates cleaner indoor air
  • Actual Dimensions: 20" x 25 ⅞" x 4 ⅞"

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Frequently Purchased Together
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Product Details

The AIRx 20x26x5 is a compatible replacement for the White-Rodgers FR2000-100 air filter. If you want to promote superior indoor air quality (IAQ) for your family, this filter is for you!

          • MERV 11 efficiency rating
          • Compatible replacement for White-Rodgers ComfortPlus media filter
          • Durable construction for easy, slide-in replacement
          • Replaces part # F825-0549
          • Fits in ACM2000 Media Cabinet
          • 100% synthetic gradient media that does not support microbiological growth
          • This filter can also be used to replace the cells in the Model SST 20C26S-xxx electronic air cleaner
          • Nominal dimensions - 20x26x5 / Actual dimensions 20" x 25-7/8" x 4-7/8"

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          Do you want to know about the technical specs?

          Nominal Dimensions
          20 x 26 x 5"
          Actual Dimensions
          20 x 25 ⅞ x 4 ⅞"
          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:

          Fits In These Systems:


          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!