*** SAVE MONEY WITH GENERIC REPLACEMENT *** Trane/American Standard PERFECT FIT Air Filter (BAYFTAH23M) -2 Pack Genuine OEM Replacement Air Filter by Trane/American Standard: FLR06073 - 21" X 23.5" X 5" nominal size - 20.1" X 23.2" X 5" actual size - Efficient slde in media filter - Air Handler Enclosure filter for Trane/American Standard - 2 filters per box - Used in model TFM235A0AH0, TFM235A0AH10, TFM235B0AH0A TFM235B0AH01,TFP235A0AH00,TFP235A0AH10, TFP235A0AH11 Perfect Fit High Efficiency Air Cleaners