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✓Actual Filter Size: 15.75 x 24.75 x 4.38 | Nominal Size: 16 x 25 x 5 | Recommended to replace every 6–12 months depending on usage and environment.
✓Replacement for Lennox X6670, HCF16-11: Designed to match the performance and fit of the Lennox Healthy Climate X6670, HFCF16-11 filters. Fortify provides dependable filtration for whole-house HVAC systems.
✓High-Efficiency MERV 11 Filtration: Captures up to 95% of airborne particles including dust, mold spores, pet dander, pollen, and household allergens—helping create a healthier indoor environment.
✓Durable Construction for Long-Term Use: Made in the USA with electrostatically charged synthetic media, moisture-resistant frames, and reinforced metal backing to withstand humidity and airflow stress.
✓Improves System Efficiency: Deep pleated design delivers low airflow resistance and high dust-holding capacity, helping HVAC systems run cleaner and more efficiently for longer.