Filtrete 4" Allergen Reduction Filter- 20x25x4 #DP03DC (2 Pack) 2 Pack MERV 11 Nominal size: 20" x 25" x 4" Actual size: 19-3/4" X 24-7/16" X 4-3/16" Replaces: Honeywell Filter XFC100A1037 in air cleaner models F25, F35, F100, F150, and F200.