Honeywell Replacement Media - FC100A1029- 16x25 - 2-Pack Honeywell factory original, OEM FC100A1029 Pleated Filter, 16" x 25" x 4", MERV 11 Static Pressure Drop (in w.c.): 0.24 Used with Honeywell 16x25 F100 and F200 Media Air Cleaners Nominal filter size: 16" x 25" x 4" Actual filter size: 15 7/8" x 24 3/4" x 4 3/8" 2 pack of Honeywell factory original OEM filters