Replacement furnace filter to replace original Honeywell filters numbers 203720, FC100A, FC35A1027, FC100A1037, FC200E, FC200E1037.

Media replacement cartridge, for furnaces with filter cavities approximately sized 20 inches x 25 inches x 5 inches.

Actual measurements of filter: 20 inches by 24.75 inches by 4.25 inches.

Filter may be smaller than cavity to account for installation differences, but the size will not reduce the filter's effectiveness.

MERV 11 rating. Sold as a 3-pack of filters.

Replaces Flanders PrecisionAire part number 500AB.

Filter is manufactured by RPS to replace genuine Honeywell filters.

Original part numbers; HW2025, HW20x25.