Carrier & Bryant FILXUMC112020 - 20" x 20" x 4" Pleated Air Filter, MERV 11 replaces old part # FILXXFNC0121

‌MERV 11 Nominal Filter Size: 20x20x4 Actual Filter Size: 19-1/8" x 19-13/16" x 4-1/8" Recommended Filter Replacement: 6 Months Replaces FILXXFNC0121 - 20" x 20" x 4"