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GeneralAire 3FM1625 MERV 8 Filter Media Cartridge

GeneralAire 4521
$45.99
Buy 1 - 2 for $45.99 ea.
Buy 3+ for $40.99 ea.
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Filters Fast Replacement for GeneralAire 3FM1625 16x25x3 MERV 8 Air & Furnace Filter - 3-Pack

3FM1625 FF
$62.95
$20.98 per Filter


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GeneralAire 4521
GeneralAire 3FM1625 FF
Filter Life
4 - 6 Months
6 - 12 Months
MERV Rating
MERV 8
MERV 8
Reduces Dust
Reduces Pollen
Reduces Mold Spores
Reduces Pet Dander
Reduces Smoke & Smog
Reduces Allergens
Reduces Bacteria
Reduces Virus Carriers
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Product Information
Frequently Bought With This Item

    The GeneralAire 3FM1625 is a filter media cartridge that measures 16" x 25" x 3" , and is the correct replacement part for GeneralAir MAC 1200 and MAC 1200M Air Cleaners. This General Aire filter is rated MERV 8, and consists of electro-statically charged 100% synthetic media which will dramatically reduce airborne contaminates and pollutants to provide much healthier indoor air. These effective filter media cartridges capture airborne particulates as small as 1.0 micron deep within the layers of spun-bonded fibers, which do not have any chemical binders. The General Aire effective OptiFiber media is hydrophobic, therefore does not absorb moisture. It also resists shredding, which assures dependable and reliable dust-fighting capabilities.

    Specifications:

    • Brand: GeneralAire
    • Part Number: 4521 or GeneralAir 3FM1625
    • Pack Size: 1
    • Filter Life: 4 - 6 Months
    • MERV Rating: 8
    • Nominal Dimensions: 16" x 25" x 3"

    Compatible Parts:

    The GeneralAire 4521 is the correct replacement for the following part numbers:

    Part Number
    4521
    Trion Air Bear 255649-101
    No results for {X}

    Compatible Models:

    The GeneralAire 4521 is correct replacement for the following model numbers:

    BrandModel NumberDescription
    GeneralAire GENERALAIRE MAC1200 Air Cleaner filter media
    GeneralAire GENERALAIRE MAC1200M Air Cleaner filter media
    No results for {X}

    Customer Reviews:

    Total Reviews: 1 Average Rating: 5 / 5.0

    Filtersfast Reviews on Trust Pilot external site
    Kirby Zent2025-06-04

    Got 3 and saved a bit on a great product.

    Collected by Trustpilot.com

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