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Honeywell TRN2127T1 Replacement for Trane BAYFTFR21M, 21x27x5 Perfect Fit - 3-Pack

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$73.32 per Filter
Retail: $249.99
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Filters Fast® Replacement for Trane Perfect Fit BAYFTFR21M 21x27x5, 2-Pack

$40.48 per Filter
Retail: $110.99
You Save: 27%
Ships in 2 to 3 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
Honeywell TRN2127T1
Filters Fast FFC21275TRNM11

These three Honeywell air filters are compatible furnace filters that can be used as upgrades over the Trane Perfect Fit filter of the same size. Genuine Trane Perfect Fit filters have only a MERV 8 rating, while these compatible Honeywell furnace filters boast a MERV 10 rating.

These Honeywell AC filters replace several American Standard air filters and the Trane BAYFTFR21M or FLR06070, which are 21x27x5 air filters for Trane Air Cleaner Filter models. In addition to replacing Trane furnace filters, these air filters can also be used in most media air cleaners that require a 21x27x5 furnace filter. These furnace filters also replace the AFM210A0A10 and BAYFRAME210A air filters. Compare the actual dimensions below to ensure these filters will work with your media air cleaners.

The MERV 10 filter rating means this air conditioner filter reduces pollen, dust, pet dander, mold spores, dust mites, household cleaners, and common allergens from your indoor air. Upgrade your American Standard or Trane air filters with this compatible AC filter and alleviate allergies and sinus irritations that cause watery eyes, itchy throats, coughing and sneezing. These furnace filters will also prolong the life of your HVAC system by making it work more efficiently.


  • Brand: Trane
  • Part Number: TRN2127T1
  • Pack Size: 3
  • Nominal Dimensions: 21" x 27" x 5"
  • Actual Dimensions: 20.7" x 26.2" x 5"
  • MERV Rating: 10
  • Pleated Media
  • Pressure Drop: 0.17 in. w.c. at 492 FPM
  • 0.3 to 1.0 Microns = 22%
  • 1.0 to 3.0 Microns = 61%
  • 3.0 to 10.0 Microns = 87%
  • Replaces: Trane BAYFTFR21M / American Standard TFM210A0FRO & TFM210A0FR0

These are genuine Honeywell filters also known by part numbers TRN2127T1 and HTRN2127T1.

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