The Trane BAYFTFR24P4A is the correct replacement air filter for the following air cleaner models:
The Trane Perfect Fit BAYFTFR24P4A Filter - 21x27x1 fits several air cleaner models manufactured by Trane. Featuring pleats and a depth of 1 inch, this Trane Perfect Fit filter measures approximately 24.5 × 28.5 × 1 and helps improve your overall indoor air quality. This furnace air filter easily slides into the media slot of your air cleaner for quick use.
Trane Perfect Fit BAYFTFR24P4A Filter - 21x27x1 specifications: