FiltersFast Compatible Replacement for Trane 21" x 27" x 5" (Actual Size: 20 9/16" x 26 1/4" x 4 15/16") Perfect Fit BAYFTFR21M Filter 2-Pack Dimensions: 21" x 27" x 5" (Actual Size: 20 9/16" x 26 1/4" x 4 15/16") MERV Rating: MERV 8 2-Pack For Added Convenience Energy Efficient - Saves You Money! Made in the USA!