AIRx 21x27x1TR-DUST | Our#: 176075

21x27x1 AIRx DUST Trane BAYFTFR21P4 Replacement Air Filter - MERV 8

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AIRx 21x27x1TR-DUST | Our#: 176075

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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: 20 ⅝" x 26 ¼" x ¾"

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Product Details

21x27x1 AIRx DUST Trane BAYFTFR21P4 Replacement Air Filter - MERV 8- 4 Pack

A great value - these "generic", non-branded filters are made to the same dimensions as the Trane / American Standard BAYFTFR21P4 / FLR05050 PerfectFit prefilters.  Expect comparable performance at a value price!   Note - these filters not made by Trane or American Standard.

Nominal Size:
21" X 27" X 1"
Actual Size: 20-5/8" X 26-1/4" X 3/4"


  • Excellent for high-velocity equipment.
  • Affordable price with good performance
  • Great for helping reduce airborne allergens such as bacteria, particles that carry viruses, pollen, mold spores, fine dust, and pet dander.
  • Filter material will not support the development of mold, mildew, bacteria or other microorganisms in normal use.
  • No chemicals added. Filters are chemical free!
  • Over 30-times more efficient at capturing micro particles than ordinary fiberglass filters.
  • Lasts UP TO 3 months!


  • MERV 8 Rating
  • 100% synthetic gradient media, electrostatically charged
  • 30 gauge galvanized expanded metal grid
  • Moisture resistant double wall beverage board
  • Media pack totally bonded to frame
  • This product is listed and rated by Underwriters Laboratories as U.L. Class 2.

Fits in the following electronic air cleaner models:
TFE210A9FR00, TFE210A9FR10, TFE210A9FR20, TFE210A9FR30

Fits in the following media air cleaner models:
TFP210A0FR00, TFP210A0FR10, TFP210A0FR11

Do you want to know about the technical specs?

Nominal Dimensions
21 x 27 x 1"
Actual Dimensions
20 ⅝ x 26 ¼ x ¾"
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: