GeneralAire 4001 12758 MERV 11 Replacement Media Furnace Air Filter

Keep your HVAC system running efficiently with the GeneralAire 4001 / 12758 Replacement Media Filter.

This genuine OEM MERV 11 expandable filter media is designed to capture dust, pollen, airborne particles, and other common household contaminants while maintaining strong airflow performance.

Compatible with GeneralAire AC1, AC22, and AC3 whole-house air cleaner systems, this replacement filter helps improve indoor air quality and supports efficient heating and cooling operation.

Product Features:

• Genuine GeneralAire replacement filter

• MERV 11 filtration

• Expandable pleated media

• Fits AC1, AC22, and AC3 systems

• Helps trap dust, pollen, and allergens

• Recommended replacement every 6 to 12 months

• Easy slide-in installation

Package Includes:
1 x GeneralAire 4001 / 12758 Replacement Filter Media