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FiltersFast replacement home air filters should be replaced every one to three months depending on air quality and usage. Replacement 1", 2", 4", and 5" air filters are available and come in select MERV ratings.

Find your Air Filter Size


Depth
Most common house filters are 1" in the depth or thickness. If you measure your filter to find the real thickness you will find that it isn't the same dimension as it states on the filter. This difference in the real dimension to the printed dimension are industry standards and can be confusing. The printed size on a filter is called nominal size and is not the real dimension of the filter. So a 1" thick filter is normally .75" thick. To make it easier to talk about sizes we use the nominal dimensions to refer to filter instead of the actual or real size. Because you are creating a filter by selecting the real dimensions, it is important to know the real dimensions of your filter instead of the nominal or printed dimensions that show on your filter. We will show you the nominal dimension for the Depth or thickness because there are only 1",2", or 4" sizes. Now you would select 1" for your filter if you are replacing a .75" filter, if your filter is 1.75" that would be a 2" filter and a 4" is 3.5"
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Size
Nominal Size: The printed value of a filter dimension. (15"x20"x1")
Actual size: Actual or real sizes of filters are typically .5" less than the printed dimension or nominal value listed on the filter. A filter of 20"x24" would be 19.5"x23.5"
Need help? Call 866-438-3458. Our sales line is open Monday through Friday between the hours of 9am to 12:30pm and 1:30pm to 6pm EST.

FiltersFast Air Filters Product List:


Filters Fast® Replacement for Lennox CB29M-26 - 6-Pack
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Retail: $99.99

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Filters Fast® Replacement for Lennox CB30M-65 - 6-Pack
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Filters Fast® Replacement for Lennox CB30M-51 - 6-Pack
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Retail: $99.99

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Filters Fast® Custom Size Air Filters - Made to your size Fast
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Retail: $97.99

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Filters Fast® FFC20255TABM8 Trion 255649-102 20x25x5 Filter 2-Pack
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Retail: $69.99

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Filters Fast® FFC20256SGM8 Replacement for AprilAire SpaceGard 2200 MERV8 2-Pack
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Retail: $79.99

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Filters Fast® FFC20255TAB Replacement for Trion 259112-102 2-Pack
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Retail: $69.99

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Filters Fast® Replacement for Carrier GAPCCCAR2025 GAPAAXCC2025
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Retail: $89.99

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Filters Fast® 255649-105 Replacement for Trion 16x25x5 Air Bear Filters MERV8 - 2-Pack
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Retail: $59.99

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Filters Fast® FFC175275TRNM8 Replacement for Trane 17.5x27x5 BAYFTFR17M 2-Pack
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Retail: $79.99

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Filters Fast® FF20255X6673M11 Replacement for Lennox X6673 MERV11, 20x25x5 - 2-Pack
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Filters Fast® FFC20255HON Replacement for Honeywell FC100A1037 20x25x5, 2-pack
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Retail: $75.99

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Filters Fast® Compatible Replacement for Carrier GAPCCCAR1625
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Filters Fast® FF16255X6670M11 Replacement for Lennox X6670 MERV11, 16x25x5 - 2-Pack
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Filters Fast® DSG201M11FF Replacement for SpaceGard AprilAire 201, 20x25x6 MERV11 - 2-Pack
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Filters Fast® FFC16255HON Replacement for FC100A1029, FILCCCAR0016 16x25x5, 2-Pack
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Filters Fast® Compatible Replacement for Carrier GAPCCCAR2020
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Filters Fast® FFC20205HON Replacement for Honeywell FC100A1011 20x20x5, 2-Pack
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Filters Fast® FFC20205TABM8 Replacement For Trion MERV 8 Filter 20x20x5 2-Pack
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Filters Fast® FFC26215TRNM8 Replacement for Trane 21x26x5 Perfect Fit BAYFTAH26M 2-Pack
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Retail: $70.99

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Filters Fast® DSG401M11FF Replacement for AprilAire 401, 16x28x6 MERV11 - 2-Pack
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Filters Fast® FFC215215TRNM8 Replacement for Trane 21x21.5x5 BAYFTAH21M FLR06072 2-Pack
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Filters Fast® FFC162766SGMM13 Replacement for AprilAire 2400 MERV13- 2-Pack
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Filters Fast® FFC16255HONM8 Replacement for Honeywell FC100A1029 - 16x25x5, 2-Pack
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Retail: $64.99

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Filters Fast® FFC20256SGM13 Replacement for AprilAire SpaceGard 2200 2250 Air Filter - MERV 13- 2-Pack
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Retail: $119.99

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