High-Efficiency MERV 11 Replacement Air Filter Media for GeneralAire Air Cleaners

Improve your home's indoor air quality with the genuine GeneralAire 12758 Replacement Filter Media (MPN: 12758). Designed with a high-efficiency MERV 11 fiberglass core, it captures airborne dust, pollen, and pet dander to protect your HVAC system and family.

Key Features

High-Efficiency MERV 11 Filtration

Engineered with a high Minimum Efficiency Reporting Value (MERV 11) rating to effectively trap smaller airborne particles, allergens, and pollutants for cleaner circulating air.

Multi-Model Air Cleaner Compatibility

Direct replacement media designed to fit GeneralAire AC-1, AC-22, and AC-3 whole-house media air cleaners (requires 1 filter per unit).

Durable Fiberglass Construction

Built with premium white fiberglass filter media to maintain structural rigidity, maximize surface area, and provide low airflow resistance for your HVAC system.

Flexible Replacement Schedule

Replace every 6 months for systems running both heating and cooling, or every 12 months for heating-only systems. Ideal for homes with shedding pets or high-dust environments requiring frequent filtration.

Product Details

Explore more from this brand: GeneralAire Products

• Product Dimensions: 25.00" L x 19.50" W x 6.25" H
• Product Weight: 1.9 lbs
• Filter Rating: MERV 11
• Material: Fiberglass
• Color: White
• Compatibility: GeneralAire AC-1, AC-22, and AC-3 Media Air Cleaners
• Alternative Part Numbers: 4001, B86-222, 4E436, S1-FM210

Additional Information

• Brand: GeneralAire® (General Filters, Inc.)
• MPN: 12758
• SKU: GEN12758
• UPC: 00683786040011

GeneralAire 12758 FAQ

What does the MERV 11 rating mean on this filter?

MERV stands for Minimum Efficiency Reporting Value. The higher the MERV rating, the more effective the filter is at trapping smaller airborne particles, such as dust, mold spores, pet dander, and pollen.

How often should I replace the GeneralAire 12758 filter media?

Replace the filter every 6 months if your system operates both heating and cooling, or every 12 months if you only use heating. If you have shedding pets, allergies, or a dusty environment, inspect and replace the filter more frequently.

Which air cleaners use the 12758 replacement media?

This filter media is engineered for GeneralAire AC-1, AC-22, and AC-3 media air cleaners (each unit requires 1 filter).

Is this filter known by any other part numbers?

Yes. The GeneralAire 12758 filter media is also cataloged and known under part numbers 4001, B86-222, 4E436, and S1-FM210.

Weight	1.9 lb
Height	6.25 in.
Length	25.00 in.
Width	19.50 in.
Inventory Number	GEN12758
MPN	12758