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GeneralAire 4646 Pre-Filter for HEPA Models 400D, 400R, AC500


Retail: $129.99 /ea
You Save: 27%
As low as
Retail: $129.99
You Save: 27%
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    The GeneralAire 4646 Pre-Filter is a combination prefilter/charcoal filter duo that works to create optimum air quality for your home. It should be replaced every 6 to 12 months, depending on usage and air quality for optimum performance. If you have more odor-related issues such as tobacco smoke or pet odor, then you should replace your filters every 3 months. After opening the door of your air cleaner, grasp both edges of the filter and slide out your filter to replace. Shop the GeneralAire 4646 today, and take one step closer to clean air!


    • Brand: GeneralAire
    • Part Number: 4646
    • Replaces Part Number: 4610
    • Pack Size: 1
    • Filter Life: 6 - 12 Months

    Compatible Models:

    The GeneralAire 4646 Pre-Filter for HEPA Models 400D, 400R, AC500 is correct replacement for the following model numbers:

    BrandModel NumberDescription
    GeneralAire400DAir Filters Furnace Filters
    GeneralAire400RAir Filters Furnace Filters
    GeneralAireAC500 Whole House HEPA Filtration SystemAir Filters Furnace Filters
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    Customer Reviews:

    Total Reviews: 1 | Average Rating: 4 / 5.0


    Does a great job of removing rust. I bought two units so I can swap out filters easily. Only part I don't like: it's not easy to turn the bypass knob, and it leaks after a few months. Easy fix, add shut off valves before and after the filter. I can swap filters in seconds. Not easy to find O-rings either. One part I REALLY like, I can see how dirty the filter is or isn't, something you can't do with some filter units

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