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Quality HVAC Filters for Residential & Commercial, All Sizes, Free Shipping!
Quality HVAC Filters, All Sizes, Free Shipping!
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20x20x1 HVAC, Furnace, AC and Heat Pump Filters

Optimize your HVAC system with our superior 20x20x1 furnace and AC filters. Perfect for both residential and commercial settings, these filters from leading brands offer outstanding air filtration, improving air quality and system longevity. Shop our 20x20x1 filters today.

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$ 151.38 - $ 151.38
$ 151.38
$ 151.38 - $ 151.38
$ 151.38

20x20x12 Multi-Flo Synthetic Extended Surface Rigid Cartridge FM (Single Header) MERV 11 112-663-005 (1 Filter)

Koch

Multi-Flo S Medium and High Efficiency The Koch Multi-Flo S is a rigid, extended surface air filter engineered to provide me...

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$ 151.38 - $ 151.38
$ 151.38
$ 151.38 - $ 151.38
$ 151.38
$ 141.54 - $ 141.54
$ 141.54
$ 141.54 - $ 141.54
$ 141.54

20x20x12 Multi-Flo Synthetic Extended Surface Rigid Cartridge NHM (No Header) MERV 11 112-653-005 (1 Filter)

Koch

Multi-Flo S Medium and High Efficiency The Koch Multi-Flo S is a rigid, extended surface air filter engineered to provide me...

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$ 141.54 - $ 141.54
$ 141.54
$ 141.54 - $ 141.54
$ 141.54
$ 154.54 - $ 154.54
$ 154.54
$ 154.54 - $ 154.54
$ 154.54

20x20x12 Multi-Flo Synthetic Extended Surface Rigid Cartridge FM (Single Header) MERV 12 112-662-005 (1 Filter)

Koch

Multi-Flo S Medium and High Efficiency The Koch Multi-Flo S is a rigid, extended surface air filter engineered to provide me...

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$ 154.54 - $ 154.54
$ 154.54
$ 154.54 - $ 154.54
$ 154.54
$ 142.69 - $ 142.69
$ 142.69
$ 142.69 - $ 142.69
$ 142.69

20x20x12 Multi-Flo Synthetic Extended Surface Rigid Cartridge NHM (No Header) MERV 12 112-652-005 (1 Filter)

Koch

Multi-Flo S Medium and High Efficiency The Koch Multi-Flo S is a rigid, extended surface air filter engineered to provide me...

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$ 142.69 - $ 142.69
$ 142.69
$ 142.69 - $ 142.69
$ 142.69
$ 159.67 - $ 159.67
$ 159.67
$ 159.67 - $ 159.67
$ 159.67

20x20x12 Multi-Flo Synthetic Extended Surface Rigid Cartridge FM (Single Header) MERV 14 112-661-005 (1 Filter)

Koch

Multi-Flo S Medium and High Efficiency The Koch Multi-Flo S is a rigid, extended surface air filter engineered to provide me...

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$ 159.67 - $ 159.67
$ 159.67
$ 159.67 - $ 159.67
$ 159.67
$ 151.28 - $ 151.28
$ 151.28
$ 151.28 - $ 151.28
$ 151.28

20x20x12 Multi-Flo Synthetic Extended Surface Rigid Cartridge NHM (No Header) MERV 14 112-651-005 (1 Filter)

Koch

Multi-Flo S Medium and High Efficiency The Koch Multi-Flo S is a rigid, extended surface air filter engineered to provide me...

Ver todos los detalles
$ 151.28 - $ 151.28
$ 151.28
$ 151.28 - $ 151.28
$ 151.28
$ 173.42 - $ 173.42
$ 173.42
$ 173.42 - $ 173.42
$ 173.42

20x20x12 Multi-Flo Synthetic Extended Surface Rigid Cartridge FM (Single Header) MERV 15 112-660-005 (1 Filter)

Koch

Multi-Flo S Medium and High Efficiency The Koch Multi-Flo S is a rigid, extended surface air filter engineered to provide me...

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$ 173.42 - $ 173.42
$ 173.42
$ 173.42 - $ 173.42
$ 173.42
$ 162.36 - $ 162.36
$ 162.36
$ 162.36 - $ 162.36
$ 162.36

20x20x12 Multi-Flo Synthetic Extended Surface Rigid Cartridge NHM (No Header) MERV 15 112-650-005 (1 Filter)

Koch

Multi-Flo S Medium and High Efficiency The Koch Multi-Flo S is a rigid, extended surface air filter engineered to provide me...

Ver todos los detalles
$ 162.36 - $ 162.36
$ 162.36
$ 162.36 - $ 162.36
$ 162.36
$ 231.57 - $ 231.57
$ 231.57
$ 231.57 - $ 231.57
$ 231.57

20x20x12 Koch Multi-Cell Galvanized MERV 11 No Header 110-714-005

Koch

Multi-Cell Air Filters Medium & High Efficiency Extended Surface Air Filters Features: Three efficiency ranges Multiple frame and header optio...

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$ 231.57 - $ 231.57
$ 231.57
$ 231.57 - $ 231.57
$ 231.57
$ 243.71 - $ 243.71
$ 243.71
$ 243.71 - $ 243.71
$ 243.71

20x20x12 Koch Multi-Cell Galvanized MERV 11 Double Header 110-724-005

Koch

Multi-Cell Air Filters Medium & High Efficiency Extended Surface Air Filters Features: Three efficiency ranges Multiple frame and header optio...

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$ 243.71 - $ 243.71
$ 243.71
$ 243.71 - $ 243.71
$ 243.71
$ 230.74 - $ 230.74
$ 230.74
$ 230.74 - $ 230.74
$ 230.74

20x20x12 Koch Multi-Cell Galvanized MERV 11 Single Header 110-734-005

Koch

Multi-Cell Air Filters Medium & High Efficiency Extended Surface Air Filters Features: Three efficiency ranges Multiple frame and header optio...

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$ 230.74 - $ 230.74
$ 230.74
$ 230.74 - $ 230.74
$ 230.74
$ 231.57 - $ 231.57
$ 231.57
$ 231.57 - $ 231.57
$ 231.57

20x20x12 Koch Multi-Cell Galvanized MERV 13 No Header 110-712-005

Koch

Multi-Cell Air Filters Medium & High Efficiency Extended Surface Air Filters Features: Three efficiency ranges Multiple frame and header optio...

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$ 231.57 - $ 231.57
$ 231.57
$ 231.57 - $ 231.57
$ 231.57
$ 243.71 - $ 243.71
$ 243.71
$ 243.71 - $ 243.71
$ 243.71

20x20x12 Koch Multi-Cell Galvanized MERV 13 Double Header 110-722-005

Koch

Multi-Cell Air Filters Medium & High Efficiency Extended Surface Air Filters Features: Three efficiency ranges Multiple frame and header optio...

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$ 243.71 - $ 243.71
$ 243.71
$ 243.71 - $ 243.71
$ 243.71
$ 230.74 - $ 230.74
$ 230.74
$ 230.74 - $ 230.74
$ 230.74

20x20x12 Koch Multi-Cell Galvanized MERV 13 Single Header 110-732-005

Koch

Multi-Cell Air Filters Medium & High Efficiency Extended Surface Air Filters Features: Three efficiency ranges Multiple frame and header optio...

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$ 230.74 - $ 230.74
$ 230.74
$ 230.74 - $ 230.74
$ 230.74
$ 250.32 - $ 250.32
$ 250.32
$ 250.32 - $ 250.32
$ 250.32

20x20x12 Koch Multi-Cell Galvanized MERV 14 No Header 110-710-005

Koch

Multi-Cell Air Filters Medium & High Efficiency Extended Surface Air Filters Features: Three efficiency ranges Multiple frame and header optio...

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$ 250.32 - $ 250.32
$ 250.32
$ 250.32 - $ 250.32
$ 250.32
$ 253.30 - $ 253.30
$ 253.30
$ 253.30 - $ 253.30
$ 253.30

20x20x12 Koch Multi-Cell Galvanized MERV 14 Double Header 110-720-005

Koch

Multi-Cell Air Filters Medium & High Efficiency Extended Surface Air Filters Features: Three efficiency ranges Multiple frame and header optio...

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$ 253.30 - $ 253.30
$ 253.30
$ 253.30 - $ 253.30
$ 253.30
$ 238.41 - $ 238.41
$ 238.41
$ 238.41 - $ 238.41
$ 238.41

20x20x12 Koch Multi-Cell Galvanized MERV 14 Single Header 110-730-005

Koch

Multi-Cell Air Filters Medium & High Efficiency Extended Surface Air Filters Features: Three efficiency ranges Multiple frame and header optio...

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$ 238.41 - $ 238.41
$ 238.41
$ 238.41 - $ 238.41
$ 238.41
20x20x1 Koch Disposable Polyester Panel 284-200-200 (12 Filters)
$ 70.99 - $ 70.99
$ 70.99
$ 70.99 - $ 70.99
$ 70.99

20x20x1 Koch Disposable Polyester Panel 284-200-200 (12 Filters)

Koch

Disposable Panel Filters for Commercial, Industrial & Residential Use KOCH Disposable Polyester Panel Filters are versatile and suitable for a...

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$ 70.99 - $ 70.99
$ 70.99
$ 70.99 - $ 70.99
$ 70.99

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