Fortify 20x20x4 MERV 11 Replacement for Honeywell FC100A1011 Pleated HVAC AC Furnace Filters. (2-Pack) Actual Size: 19-5/8 x 19-7/8 x 4-3/8

Nominal Size: 20 x 20 x 4 or 20 x 20 x 5 | Actual Dimensions: 19.63 x 19.88 x 4.38 | Whole-house replacement air cleaner HVAC filter designed for use in furnaces, air conditioners, heat pumps, and HVAC systems. Compatible Replacement Designed for Models: Honeywell FC35A1019, FC100A1011, FC200E1011, CF200A1024, FC100A1011/U, CF200D2020, 20372. Engineered with MERV 11 synthetic media (similar to MPR 1000 - 1200 and FPR 7), this filter effectively captures up to 95% of airborne particles, including pet dander, allergens, pollen, and dust, smog, while maintaining excellent airflow. Frame & Durability: Manufactured with moisture-resistant beverage board frames and reinforced by dual wire backing, this filter offers enhanced strength and durability, performing reliably even in extreme temperatures—outclassing conventional cardboard frame filters. Construction Features: Proudly made in the USA, this filter uses an electrostatically charged synthetic media, providing superior dust-holding capacity and lasting up to six times longer than standard fiberglass filters. For best results, replace the filter every 90-180 days as needed.