Honeywell FC100A1045 21.5 x 27.5 x 4 MERV 11 OEM Media Air Filter
This genuine Honeywell FC100A1045 media air cleaner filter captures particles in your indoor air more efficiently than a one-inch disposable filter. Honeywell media air cleaners significantly reduce the antigens and allergens re-circulated through your home, providing you greater comfort and peace of mind.
Actual Dimensions: 21 1/8 x 27 3/8 x 4 3/8
Nominal Dimensions: 21.5x27.5x4
Replace filter every 6 - 12 months, or more often if the filter appears dirty to the point of blocking air flow through the heating/cooling equipment.