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U.S.-based manufacturer and retailer of residential and commercial HVAC and furnace air filters (USA-made since 2010). Sells standard and custom-size air filters (MERV 6–13), offers rewards, Subscribe & Save, wholesale accounts, and free shipping within the contiguous United States.
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Product Catalog Factorydirectfilters.com

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16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air System by Aerostar 16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air System by Aerostar 54.48 USD The Aerostar 16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air System by Aerostar 16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air System by Aerostar 397.8 USD The Aerostar 16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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Excellent
16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air System by Aerostar 16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air System by Aerostar 140.04 USD The Aerostar 16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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Recommended
16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air System by Aerostar 16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air System by Aerostar 62 USD The Aerostar 16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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Featured
16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air System by Aerostar 16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air System by Aerostar 172.28 USD The Aerostar 16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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Alternative
16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air System by Aerostar 16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air System by Aerostar 489.6 USD The Aerostar 16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air System by Aerostar 16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air System by Aerostar 244.8 USD The Aerostar 16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air System by Aerostar 16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air System by Aerostar 198.9 USD The Aerostar 16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air System by Aerostar 16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air System by Aerostar 81.7 USD The Aerostar 16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air System by Aerostar 16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air System by Aerostar 134.88 USD The Aerostar 16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air System by Aerostar 16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air System by Aerostar 383.28 USD The Aerostar 16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air System by Aerostar 16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air System by Aerostar 191.64 USD The Aerostar 16x20x5 Replacement Air Filter for Honeywell FC100A1003 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air System, Lennox X6673 and X6675, Carrier EXPXXFIL0020 20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air System, Lennox X6673 and X6675, Carrier EXPXXFIL0020 55.99 USD The Aerostar 20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air System, Lennox X6673 and X6675, Carrier EXPXXFIL0020 20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air System, Lennox X6673 and X6675, Carrier EXPXXFIL0020 118.99 USD The Aerostar 20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air System, Lennox X6673 and X6675, Carrier EXPXXFIL0020 20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air System, Lennox X6673 and X6675, Carrier EXPXXFIL0020 186.99 USD The Aerostar 20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air System, Lennox X6673 and X6675, Carrier EXPXXFIL0020 20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air System, Lennox X6673 and X6675, Carrier EXPXXFIL0020 59.99 USD The Aerostar 20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air System, Lennox X6673 and X6675, Carrier EXPXXFIL0020 20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air System, Lennox X6673 and X6675, Carrier EXPXXFIL0020 165.99 USD The Aerostar 20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air System, Lennox X6673 and X6675, Carrier EXPXXFIL0020 20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air System, Lennox X6673 and X6675, Carrier EXPXXFIL0020 349.99 USD The Aerostar 20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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Factorydirectfilters.com best products

20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air System, Lennox X6673 and X6675, Carrier EXPXXFIL0020 20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air System, Lennox X6673 and X6675, Carrier EXPXXFIL0020 329.99 USD The Aerostar 20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air System, Lennox X6673 and X6675, Carrier EXPXXFIL0020 20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air System, Lennox X6673 and X6675, Carrier EXPXXFIL0020 175.99 USD The Aerostar 20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air System, Lennox X6673 and X6675, Carrier EXPXXFIL0020 20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air System, Lennox X6673 and X6675, Carrier EXPXXFIL0020 62.99 USD The Aerostar 20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air System, Lennox X6673 and X6675, Carrier EXPXXFIL0020 20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air System, Lennox X6673 and X6675, Carrier EXPXXFIL0020 124.99 USD The Aerostar 20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air System, Lennox X6673 and X6675, Carrier EXPXXFIL0020 20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air System, Lennox X6673 and X6675, Carrier EXPXXFIL0020 372.99 USD The Aerostar 20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air System, Lennox X6673 and X6675, Carrier EXPXXFIL0020 20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air System, Lennox X6673 and X6675, Carrier EXPXXFIL0020 110.99 USD The Aerostar 20x25x5 Replacement Air Filter for Honeywell FC100A1037 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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21 1/2x23 1/2x4 Aerostar Air Filter 21 1/2x23 1/2x4 Aerostar Air Filter 310.61 USD These 21.5x23.5x4 air filters are right-sized for your needs. Choose the MERV rating that suits your lifestyle and breathe cleaner air.
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Trion Air Bear 16x25x5 Replacement Air Filter for Air Bear 229990-105 and 2556949-105 Air Systems, GeneralAire 4511 Trion Air Bear 16x25x5 Replacement Air Filter for Air Bear 229990-105 and 2556949-105 Air Systems, GeneralAire 4511 187.38 USD The Aerostar 16x25x5 Replacement Air Filter for Trion AirBear 229990-105 and 2556949-105 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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Trion Air Bear 16x25x3 Replacement Air Filter for Air Bear 229990-101 and 435790-028 Air Systems, GeneralAire 4521, Lennox X0581, Totaline P101-1625 Trion Air Bear 16x25x3 Replacement Air Filter for Air Bear 229990-101 and 435790-028 Air Systems, GeneralAire 4521, Lennox X0581, Totaline P101-1625 120.99 USD The Aerostar 16x25x3 Replacement Air Filter for Trion AirBear 2299900-101 and 435790-028 Air Systems features a multi-system fit that is compatible with other brands and models (for full compatibility list, see Additional Specifications), and is available in multiple MERV ratings to suit your lifestyle and needs.
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16x25x4 Commercial & Residential Aerostar Air Filter by Aerostar 16x25x4 Commercial & Residential Aerostar Air Filter by Aerostar 262.97 USD The Aerostar 16x25x4 commercial HVAC air filter is ready to filter the air in your home or office. Choose the MERV rating that suits your lifestyle and start filtering cleaner air through your air conditioning or furnace system.
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16x36x4 Aerostar Air Filter 16x36x4 Aerostar Air Filter 588.3 USD These 16x36x4 air filters are right-sized for your needs. Choose the MERV rating that suits your lifestyle and breathe cleaner air.
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Trion Air Bear 16x25x3 Replacement Air Filter for Air Bear 229990-101 and 435790-028 Air Systems, GeneralAire 4521, Lennox X0581, Totaline P101-1625 Trion Air Bear 16x25x3 Replacement Air Filter for Air Bear 229990-101 and 435790-028 Air Systems, GeneralAire 4521, Lennox X0581, Totaline P101-1625 146.99 USD The Aerostar 16x25x3 Replacement Air Filter for Trion AirBear 2299900-101 and 435790-028 Air Systems features a multi-system fit that is compatible with other brands and models (for full compatibility list, see Additional Specifications), and is available in multiple MERV ratings to suit your lifestyle and needs.
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20x20x5 Replacement Air Filter for Bryant Carrier P102-2020 Air Systems, Goodman MU2020 20x20x5 Replacement Air Filter for Bryant Carrier P102-2020 Air Systems, Goodman MU2020 564 USD The Aerostar 20x20x5 Replacement Air Filter for Bryant Carrier P102-2020 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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Trion Air Bear 16x25x5 Replacement Air Filter for Air Bear 229990-105 and 2556949-105 Air Systems, GeneralAire 4511 Trion Air Bear 16x25x5 Replacement Air Filter for Air Bear 229990-105 and 2556949-105 Air Systems, GeneralAire 4511 374.76 USD The Aerostar 16x25x5 Replacement Air Filter for Trion AirBear 229990-105 and 2556949-105 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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Trion Air Bear 16x25x3 Whole House Air Filter for Air Bear 229990-101 Trion Air Bear 16x25x3 Whole House Air Filter for Air Bear 229990-101 295.99 USD These 16x25x3 air filters are right-sized for your needs. Choose the MERV rating that suits your lifestyle and breathe cleaner air.
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20x20x4 Commercial & Residential Aerostar Air Filter 20x20x4 Commercial & Residential Aerostar Air Filter 54.99 USD The Aerostar 20x20x4 commercial HVAC air filter is ready to filter the air in your home or office. Choose the MERV rating that suits your lifestyle and start filtering cleaner air through your air conditioning or furnace system.
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Trion Air Bear 16x25x3 Replacement Air Filter for Air Bear 229990-101 and 435790-028 Air Systems, GeneralAire 4521, Lennox X0581, Totaline P101-1625 Trion Air Bear 16x25x3 Replacement Air Filter for Air Bear 229990-101 and 435790-028 Air Systems, GeneralAire 4521, Lennox X0581, Totaline P101-1625 62.99 USD The Aerostar 16x25x3 Replacement Air Filter for Trion AirBear 2299900-101 and 435790-028 Air Systems features a multi-system fit that is compatible with other brands and models (for full compatibility list, see Additional Specifications), and is available in multiple MERV ratings to suit your lifestyle and needs.
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20x24x4 Commercial & Residential Aerostar Air Filter 20x24x4 Commercial & Residential Aerostar Air Filter 184.38 USD The 20x24x4 Aerostar fits commercial and residential systems with a 4-inch filter slot, measuring 19 3/8" x 23 3/8" x 3 3/4" actual. The 4-inch depth is where pleated filtration earns its cost: substantially more media than a 1-inch can hold, much lower pressure drop across the filter face, and a service life measured in months rather than weeks. MERV 8 covers baseline residential and light commercial filtration. MERV 11 handles pet households and most allergen concerns. MERV 13 captures fine particulates including smoke, bacteria, and virus-sized droplets - the recommended grade for healthcare, food service, or any indoor environment where air quality matters more than minimal cost. The cardboard frame is reinforced for the higher airflow rates commercial blowers generate, which can collapse weaker filter frames. Pleated synthetic media with an electrostatic charge handles the work, manufactured by Con-Air Industries in Orlando, Florida. Service life is 6 to 12 months in residential use, 3 to 6 months in light commercial applications. Pressure drop is the actual change indicator - if your system's static pressure gauge climbs significantly above clean-filter baseline, that's the signal to swap, regardless of how long the filter has been in service.
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Trion Air Bear 16x25x5 Replacement Air Filter for Air Bear 229990-105 and 2556949-105 Air Systems, GeneralAire 4511 Trion Air Bear 16x25x5 Replacement Air Filter for Air Bear 229990-105 and 2556949-105 Air Systems, GeneralAire 4511 129.24 USD The Aerostar 16x25x5 Replacement Air Filter for Trion AirBear 229990-105 and 2556949-105 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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Trion Air Bear 16x25x5 Replacement Air Filter for Air Bear 229990-105 and 2556949-105 Air Systems, GeneralAire 4511 Trion Air Bear 16x25x5 Replacement Air Filter for Air Bear 229990-105 and 2556949-105 Air Systems, GeneralAire 4511 478.2 USD The Aerostar 16x25x5 Replacement Air Filter for Trion AirBear 229990-105 and 2556949-105 Air Systems features a multi-model fit design (see Additional Specifications for full model list) and is available in multiple MERV filtration levels to suit your lifestyle and needs.
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Trion Air Bear 16x25x3 Replacement Air Filter for Air Bear 229990-101 and 435790-028 Air Systems, GeneralAire 4521, Lennox X0581, Totaline P101-1625 Trion Air Bear 16x25x3 Replacement Air Filter for Air Bear 229990-101 and 435790-028 Air Systems, GeneralAire 4521, Lennox X0581, Totaline P101-1625 150.99 USD The Aerostar 16x25x3 Replacement Air Filter for Trion AirBear 2299900-101 and 435790-028 Air Systems features a multi-system fit that is compatible with other brands and models (for full compatibility list, see Additional Specifications), and is available in multiple MERV ratings to suit your lifestyle and needs.
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Trion Air Bear 16x25x3 Whole House Air Filter for Air Bear 229990-101 Trion Air Bear 16x25x3 Whole House Air Filter for Air Bear 229990-101 153.99 USD These 16x25x3 air filters are right-sized for your needs. Choose the MERV rating that suits your lifestyle and breathe cleaner air.
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