The Trane BAYFTFR17P4A is the correct replacement air filter for the following air cleaner models:
The Trane Perfect Fit BAYFTFR17P4A Filter - 17.5x27x1 fits several air cleaner models manufactured by Trane. This Trane Perfect Fit filter is 1 inch and pleated for maximum purification of your air. This Trane furnace filter measures approximately 17.5" x 27" x 1" and slides in easily for quick use.
Trane Perfect Fit BAYFTFR17P4A Filter - 17.5x27x1 specifications: