AIRx 21x23.5x5TR-ALLERGY | Our#: 174260
21x23.5x5 AIRx ALLERGY Trane BAYFTAH23M Replacement Air Filter - MERV 11
AIRx 21x23.5x5TR-ALLERGY | Our#: 174260
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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 23" x 5"

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Frequently Purchased Together
Product Details
21x23.5x5 AIRx ALLERGY Trane BAYFTAH23M, BAYFTAH23M2, FLRQB5AH23M11 Replacement Air Filter - MERV 11
Note - this filter is not manufactured by Trane or American Standard.
Many of our customers have come to us looking for alternatives to the expensive OEM PerfectFit filters. Because of unusual sizing and filter construction methods, substitutes have not been available. . . . until now!
These filters are made by a leading manufacturer to the same dimensions and performance specifications as the factory filters. Buy today and save!
- 21" X 23-1/2" X 5" nominal size
- 20.1" X 23.2" X 5" actual size
- Efficient slide in media air filter
- Furnace Enclosure filter for Trane/American Standard
- Replaces Honeywell TRN2321T1
- Used in model TFM235A0AH0, TFM235A0AH10, TFM235B0AH0A TFM235B0AH01,TFP235A0AH00,TFP235A0AH10, TFP235A0AH11, EQBFM235A0AH11 Perfect Fit High Efficiency Air Cleaners
Do you want to know about the technical specs?
Replaces These Filters:
How to change your furnace/air-conditioner/HVAC air filter
Estimated time: 10 minutes or less
Steps
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.
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.
Purchase a new air filter from DiscountFilters.com
Visit DiscountFilters.com and purchase a new filter. Use our filter finders to verify the correct match.
Remove the old filter
Turn off the power to the heating/cooling system and remove the old filter from its housing/slot and discard.
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!