The Honeywell FC100A1037 measures 20" x 25" x 4" (actual size: 20" x 24-3/4" x 4-3/8") and carries a MERV 11 efficiency rating. This pleated media filter captures airborne particles as small as 1 micron, including dust, pollen, mold spores, pet dander, and smoke, delivering high-efficiency whole-home filtration without restricting airflow in your Honeywell air cleaner cabinet.

The FC100A1037 is an OEM replacement specifically designed for Honeywell media air cleaner models F100F2036, F100F2060, F150E1034, F200E1037, and F35A whole-house air cleaners. It also fits the Honeywell F100 and F200 cabinets that require a 20x25x4 media filter. Always verify your cabinet model number before installation to ensure proper fitment and sealing.

Honeywell recommends replacing the FC100A1037 every 6 to 12 months, depending on your home's air quality, HVAC usage, and whether you have pets or allergy sufferers. Homes with heavy dust, pet dander, or smokers should replace the filter closer to the 6-month mark, while average households typically get a full 12 months of service. Check the filter every 3 months for visible buildup.

The FC100A1037 is a complete media filter with an integrated cardboard frame and pleated filtration media—no additional frame assembly is required. It slides directly into compatible Honeywell F100, F150, and F200 media air cleaner cabinets. Installation takes less than 2 minutes: open the cabinet door, remove the old filter, insert the new FC100A1037 with the airflow arrow pointing toward the blower, and close the cabinet.

The Honeywell FC100A1037 is engineered with a deep 4-inch pleated design that provides MERV 11 filtration with minimal static pressure drop—significantly lower than 1-inch high-efficiency filters. This extended surface area allows your HVAC blower to move air efficiently without overworking, making it safe for virtually all residential furnace and air handler systems while still capturing fine particulates down to 1 micron.