FiltersFast Compatible Replacement for Trane Perfect Fit Compat. 17.5" x 27" x 5" (Actual size: 17.2" x 26.2" x 5") 2-Pack, MERV 13 BAYFTFR17M Trane Perfect Fit Compat BAYFTFR17M 17.5" x 27" x 5" (Actual size: 17.2" x 26.2" x 5") MERV Rating: MERV 13 Filter Media: 100% synthetic, electrostatic air filter media Energy Efficient - Saves You Money! Pre-Assembled For Easy Installation