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    Furnace Air Filter 18 X 20 X 1 Fiberglass

    Furnace Air Filter 18 X 20 X 1 Fiberglass

    Product Description This is a standard grade furnace filter of the same type that has been protecting furnaces and central air conditioners around the world for over 50 years. The filtering medium is continuous filament spun glass. The frame is made... more

    $45.10

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    Precisionaire Furnace Air Filter 18 X 20 X 1 Fiberglass

    Precisionaire Furnace Air Filter 18 X 20 X 1 Fiberglass

    Product Description This is a standard grade furnace filter of the same type that has been protecting furnaces and central air conditioners around the world for over 50 years. The filtering medium is continuous filament spun glass. The frame is made... more

    $45.98

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    Best Seller
    Precisionaire Furnace Air Filter 18 X 20 X 1 Fiberglass

    Precisionaire Furnace Air Filter 18 X 20 X 1 Fiberglass

    Product Description This is a standard grade furnace filter of the same type that has been protecting furnaces and central air conditioners around the world for over 50 years. The filtering medium is continuous filament spun glass. The frame is made... more

    $52.74

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    AAF Flanders 18 in. W x 20 in. H x 1 in. D Fiberglass 4 MERV Air Filter (Pack of 12)

    AAF Flanders 18 in. W x 20 in. H x 1 in. D Fiberglass 4 MERV Air Filter (Pack of 12)

    This is a standard grade furnace filter of the same type that has been protecting furnaces and central air conditioners around the world for over 50 years. The filtering medium is continuous filament spun glass. The frame is made with one continuous... more

    $86.88 $59.79

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    Precisionaire Furnace Air Filter 18 X 20 X 1 Fiberglass

    Precisionaire Furnace Air Filter 18 X 20 X 1 Fiberglass

    This is a standard grade furnace filter of the same type that has been protecting furnaces and central air conditioners around the world for over 50 years. The filtering medium is continuous filament spun glass. The frame is made with one continuous... more

    $49.46

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    Precisionaire Furnace Air Filter 24 X 24 X 1 Fiberglass

    Precisionaire Furnace Air Filter 24 X 24 X 1 Fiberglass

    This is a standard grade furnace filter of the same type that has been protecting furnaces and central air conditioners around the world for over 50 years. The filtering medium is continuous filament spun glass. The frame is made with one continuous... more

    $56.00

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    Precisionaire Furnace Air Filter 14 X 30 X 1 Fiberglass

    Precisionaire Furnace Air Filter 14 X 30 X 1 Fiberglass

    Product Description The Precisionaire Furnace Air Filter has been protecting furnaces and central air conditioners around the world for over 50 years. The filtering medium is continuous filament spun glass. The frame is made with one continuous piece... more

    $44.70

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    Precisionaire Furnace Air Filter 14 X 30 X 1 Fiberglass

    Precisionaire Furnace Air Filter 14 X 30 X 1 Fiberglass

    Product Description The Precisionaire Furnace Air Filter has been protecting furnaces and central air conditioners around the world for over 50 years. The filtering medium is continuous filament spun glass. The frame is made with one continuous piece... more

    $49.95

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    Precisionaire Furnace Air Filter 25 X 25 X 1 Fiberglass

    Precisionaire Furnace Air Filter 25 X 25 X 1 Fiberglass

    This is a standard grade furnace filter of the same type that has been protecting furnaces and central air conditioners around the world for over 50 years. The filtering medium is continuous filament spun glass. The frame is made with one continuous... more

    $63.00

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    Precisionaire Furnace Air Filter 18 X 20 X 1 Fiberglass

    Precisionaire Furnace Air Filter 18 X 20 X 1 Fiberglass

    This is a standard grade furnace filter of the same type that has been protecting furnaces and central air conditioners around the world for over 50 years. The filtering medium is continuous filament spun glass. The frame is made with one continuous... more

    $49.46

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    Precisionaire Furnace Air Filter 25 X 25 X 1 Fiberglass

    Precisionaire Furnace Air Filter 25 X 25 X 1 Fiberglass

    This is a standard grade furnace filter of the same type that has been protecting furnaces and central air conditioners around the world for over 50 years. The filtering medium is continuous filament spun glass. The frame is made with one continuous... more

    $56.35 $50.67

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    Precisionaire Furnace Air Filter 25 X 25 X 1 Fiberglass

    Precisionaire Furnace Air Filter 25 X 25 X 1 Fiberglass

    This is a standard grade furnace filter of the same type that has been protecting furnaces and central air conditioners around the world for over 50 years. The filtering medium is continuous filament spun glass. The frame is made with one continuous... more

    $55.19 $46.05

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    Precisionaire Furnace Air Filter 18 X 20 X 1 Fiberglass

    Precisionaire Furnace Air Filter 18 X 20 X 1 Fiberglass

    This is a standard grade furnace filter of the same type that has been protecting furnaces and central air conditioners around the world for over 50 years. The filtering medium is continuous filament spun glass. The frame is made with one continuous... more

    $48.86

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    Furnace Air Filter 10 X 10 X 1 Fiberglass

    Furnace Air Filter 10 X 10 X 1 Fiberglass

    This is a standard grade furnace filter of the same type that has been protecting furnaces and central air conditioners around the world for over 50 years. The filtering medium is continuous filament spun glass. The frame is made with 1 continuous... more

    $41.95

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    Furnace Air Filter 18 X 20 X 1 Fiberglass

    Furnace Air Filter 18 X 20 X 1 Fiberglass

    This is a standard grade furnace filter of the same type that has been protecting furnaces and central air conditioners around the world for over 50 years. The filtering medium is continuous filament spun glass. The frame is made with one continuous... more

    $53.75

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    AAF Flanders 16 in. W X 25 in. H X 1 in. D Fiberglass 4 MERV Air Filter 1 pk (Pack of 24)

    AAF Flanders 16 in. W X 25 in. H X 1 in. D Fiberglass 4 MERV Air Filter 1 pk (Pack of 24)

    This is a standard grade furnace filter of the same type that has been protecting furnaces and central air conditioners around the world for over 50-years. The filtering medium is continuous filament spun glass. The frame is made with one continuous... more

    $78.27

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    AAF Flanders 16 in. W x 16 in. H x 1 in. D Fiberglass 4 MERV Air Filter (Pack of 12)

    AAF Flanders 16 in. W x 16 in. H x 1 in. D Fiberglass 4 MERV Air Filter (Pack of 12)

    This is a standard grade furnace filter of the same type that has been protecting furnaces and central air conditioners around the world for over 50 years. The filtering medium is continuous filament spun glass. The frame is made with one continuous... more

    $83.53 $54.36

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    AAF Flanders EZ Flow II 12 in. W x 1 in. D Fiberglass 4 MERV Air Filter (Pack of 12)

    AAF Flanders EZ Flow II 12 in. W x 1 in. D Fiberglass 4 MERV Air Filter (Pack of 12)

    This is a standard grade furnace filter of the same type that has been protecting furnaces and central air conditioners around the world for over 50 years. The filtering medium is continuous filament spun glass. The frame is made with one continuous... more

    $94.39

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    AAF Flanders 15 in. W x 25 in. H x 1 in. D Fiberglass 4 MERV Air Filter (Pack of 12)

    AAF Flanders 15 in. W x 25 in. H x 1 in. D Fiberglass 4 MERV Air Filter (Pack of 12)

    This is a standard grade furnace filter of the same type that has been protecting furnaces and central air conditioners around the world for over 50 years. The filtering medium is continuous filament spun glass. The frame is made with one continuous... more

    $66.14

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    Furnace Air Filter 14 X 30 X 1 Fiberglass

    Furnace Air Filter 14 X 30 X 1 Fiberglass

    Use:The Furnace Air Filter has been protecting furnaces and central air conditioners around the world for over 50 years Continuous Piece:The frame is made with one continuous piece of chipboard to guard against corner separation Effective... more

    $65.58

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    LeCeleBee Furnace Air Filter 14 X 30 X 1 Fiberglass

    LeCeleBee Furnace Air Filter 14 X 30 X 1 Fiberglass

    The LeCeleBee Furnace Air Filter has been protecting furnaces and central air conditioners around the world for over 50 years. The filtering medium is continuous filament spun glass. The frame is made with one continuous piece of chipboard to guard... more

    $48.51 $44.70

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    Furnace Air Filter 14 X 30 X 1 Fiberglass

    Furnace Air Filter 14 X 30 X 1 Fiberglass

    Use:The Furnace Air Filter has been protecting furnaces and central air conditioners around the world for over 50 years Continuous Piece:The frame is made with one continuous piece of chipboard to guard against corner separation Effective... more

    $65.58

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    AAF Flanders EZ Flow II 12 in. W x 1 in. D Fiberglass 4 MERV Air Filter (Pack of 12)

    AAF Flanders EZ Flow II 12 in. W x 1 in. D Fiberglass 4 MERV Air Filter (Pack of 12)

    This is a standard grade furnace filter of the same type that has been protecting furnaces and central air conditioners around the world for over 50 years. The filtering medium is continuous filament spun glass. The frame is made with one continuous... more

    $94.39

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    1 PK Filtrete 20 In. x 30 In. x 1 In. 100 MPR Basic Custom Fit Trimmable Air Filter

    1 PK Filtrete 20 In. x 30 In. x 1 In. 100 MPR Basic Custom Fit Trimmable Air Filter

    Filtrete Basic Custom Fit Air Filter outperforms fiberglass air filters for your furnace air conditioner or HVAC system. Captures particles such as lint and household dust. Quickly cuts to the size needed. Filter is washable and reusable. For best... more

    $40.26 $36.73

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    Precisionaire Furnace Air Filter 14 X 30 X 1 Fiberglass

    Precisionaire Furnace Air Filter 14 X 30 X 1 Fiberglass

    Product Description The Precisionaire Furnace Air Filter has been protecting furnaces and central air conditioners around the world for over 50 years. The filtering medium is continuous filament spun glass. The frame is made with one continuous piece... more

    $44.70

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    BULYAXIA Furnace Air Filter 14 X 30 X 1 Fiberglass

    BULYAXIA Furnace Air Filter 14 X 30 X 1 Fiberglass

    The BULYAXIA Furnace Air Filter has been protecting furnaces and central air conditioners around the world for over 50 years. The filtering medium is continuous filament spun glass. The frame is made with one continuous piece of chipboard to guard... more

    $53.41 $44.99

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    Furnace Air Filter 14 X 30 X 1 Fiberglass

    Furnace Air Filter 14 X 30 X 1 Fiberglass

    Use:The Furnace Air Filter has been protecting furnaces and central air conditioners around the world for over 50 years Continuous Piece:The frame is made with one continuous piece of chipboard to guard against corner separation Effective... more

    $65.58

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    Furnace Air Filter 14 X 30 X 1 Fiberglass

    Furnace Air Filter 14 X 30 X 1 Fiberglass

    Use:The Furnace Air Filter has been protecting furnaces and central air conditioners around the world for over 50 years Continuous Piece:The frame is made with one continuous piece of chipboard to guard against corner separation Effective... more

    $65.58

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    CintBllTer Furnace Air Filter 14 X 30 X 1 Fiberglass

    CintBllTer Furnace Air Filter 14 X 30 X 1 Fiberglass

    The CintBllTer Furnace Air Filter has been protecting furnaces and central air conditioners around the world for over 50 years. The filtering medium is continuous filament spun glass. The frame is made with one continuous piece of chipboard to guard... more

    $51.78 $44.99

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    ZHANGHU Furnace Air Filter 14 X 30 X 1 Fiberglass

    ZHANGHU Furnace Air Filter 14 X 30 X 1 Fiberglass

    The ZHANGHU Furnace Air Filter has been protecting furnaces and central air conditioners around the world for over 50 years. The filtering medium is continuous filament spun glass. The frame is made with one continuous piece of chipboard to guard... more

    $51.87

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    Filterbuy 17x21x1 MERV 13 Pleated HVAC AC Furnace Air Filters (5-Pack)

    Filterbuy 17x21x1 MERV 13 Pleated HVAC AC Furnace Air Filters (5-Pack)

    The Filterbuy replacement air filter 17x21x1 (actual measurements: 17 x 21 x 1 ) ensures that your furnace air conditioner heat pump or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle.... more

    $126.10 $100.45

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    MYXIO Furnace Air Filter 14 X 30 X 1 Fiberglass

    MYXIO Furnace Air Filter 14 X 30 X 1 Fiberglass

    The MYXIO Furnace Air Filter has been protecting furnaces and central air conditioners around the world for over 50 years. The filtering medium is continuous filament spun glass. The frame is made with one continuous piece of chipboard to guard against... more

    $61.53

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    Filterbuy 8x24x1 MERV 13 Pleated HVAC AC Furnace Air Filters (2-Pack)

    Filterbuy 8x24x1 MERV 13 Pleated HVAC AC Furnace Air Filters (2-Pack)

    The Filterbuy replacement air filter 8x24x1 (actual measurements: 8 x 24 x 1 ) ensures that your furnace air conditioner heat pump or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle.... more

    $55.07 $44.06

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    Filterbuy 19x20x1 MERV 13 Pleated HVAC AC Furnace Air Filters (2-Pack)

    Filterbuy 19x20x1 MERV 13 Pleated HVAC AC Furnace Air Filters (2-Pack)

    The Filterbuy replacement air filter 19x20x1 (actual measurements: 19 x 20 x 1 ) ensures that your furnace air conditioner heat pump or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle.... more

    $53.66 $43.34

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    Filterbuy 18x21x1 MERV 13 Pleated HVAC AC Furnace Air Filters (12-Pack)

    Filterbuy 18x21x1 MERV 13 Pleated HVAC AC Furnace Air Filters (12-Pack)

    The Filterbuy replacement air filter 18x21x1 (actual measurements: 18 x 21 x 1 ) ensures that your furnace air conditioner heat pump or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle.... more

    $248.82 $201.00

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    Filterbuy 16x21x1 MERV 13 Pleated HVAC AC Furnace Air Filters (12-Pack)

    Filterbuy 16x21x1 MERV 13 Pleated HVAC AC Furnace Air Filters (12-Pack)

    The Filterbuy replacement air filter 16x21x1 (actual measurements: 16 x 21 x 1 ) ensures that your furnace air conditioner heat pump or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle.... more

    $261.46 $209.16

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    Accumulair Diamond 12x20x1 MERV 13 Air Filter/Furnace Filters (4 pack)

    Accumulair Diamond 12x20x1 MERV 13 Air Filter/Furnace Filters (4 pack)

    Our Accumulair Diamond 12x20x1 air filter replacement for your HVAC air conditioner or furnace contains a unique synthetic media that provides high-efficiency filtration without comprising your airflow. Up to 30-times more efficient at capturing... more

    $70.96

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    Filterbuy 17x21x1 MERV 13 Pleated HVAC AC Furnace Air Filters (3-Pack)

    Filterbuy 17x21x1 MERV 13 Pleated HVAC AC Furnace Air Filters (3-Pack)

    The Filterbuy replacement air filter 17x21x1 (actual measurements: 17 x 21 x 1 ) ensures that your furnace air conditioner heat pump or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle.... more

    $78.00 $62.40

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    ProtectPlus 120201 True Blue Fiberglass 1 Thick Air Filter ~ Approx 20 x 20 x 1 (Set of 12)

    ProtectPlus 120201 True Blue Fiberglass 1 Thick Air Filter ~ Approx 20 x 20 x 1 (Set of 12)

    TRUE BLUE FIBERGLASS 1 THICK AIR FILTER Fiberglass air filter for furnaces and air conditioning systems Economy quality filter - MERV 2 rating Filter life - 30 days Blue fiberglass NOTE: This item is considered to be an Over-sized and/or Non-Standard... more

    $93.11

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    (2 pack) AAF AAF Flanders Nested FiberGlass MERV 1 Air Filter size 20 x 20 x 1 (4 Filters)

    (2 pack) AAF AAF Flanders Nested FiberGlass MERV 1 Air Filter size 20 x 20 x 1 (4 Filters)

    Keep your equipment operating at its full potential with these Flanders Precisionaire Nested Glass 20 X 20 X 1 Air Filters. They re made of the same standard-grade materials as those protecting furnaces and central air conditioners around the world for... more

    $14.96

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    More information about Appliances

    Best prices on Air conditioner accessories, Fiberglass in Appliances. Check out Bizrate for great deals on popular brands like AAF, Accumulair and flanders. Use Bizrate's latest online shopping features to compare prices. Read product specifications, calculate tax and shipping charges, sort your results, and buy with confidence. Easily narrow your search and find the product that's perfect for you.