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Furnace Filters

Browse furnace filters from the trusted brands you know — sourced through the same distribution network that supplies thousands of independent hardware stores nationwide. Every order helps keep them on the corner.

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348 products Same-day shipping cutoff: 11 AM PT
Filtrete 20 in. W X 24 in. H X 1 in. 300 MPR Pleated Filter Dust
4 per case
Ships Today

Filtrete

Filtrete 20 in. W X 24 in. H X 1 in. 300 MPR Pleated Filter Dust

MPN: 326-4

$25.80 $30.36
15% OFF Case of 4 · with code
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Filtrete 20 in. W X 30 in. H X 1 in. 300 MPR Pleated Filter Dust
4 per case
Ships Today

Filtrete

Filtrete 20 in. W X 30 in. H X 1 in. 300 MPR Pleated Filter Dust

MPN: 322-4

$25.80 $30.36
15% OFF Case of 4 · with code
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Filtrete 12 in. W X 20 in. H X 1 in. 300 MPR Pleated Air Filter
4 per case
Ships Today

Filtrete

Filtrete 12 in. W X 20 in. H X 1 in. 300 MPR Pleated Air Filter

MPN: 319-4

$25.80 $30.36
15% OFF Case of 4 · with code
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Filtrete 18 in. W X 18 in. H X 1 in. 300 MPR Pleated Filter Dust
4 per case
Ships Today

Filtrete

Filtrete 18 in. W X 18 in. H X 1 in. 300 MPR Pleated Filter Dust

MPN: 317-4

$25.80 $30.36
15% OFF Case of 4 · with code
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Filtrete 14 in. W X 25 in. H X 1 in. Polypropylene 300 MPR Pleated Air Filter
4 per case
Ships Today

Filtrete

Filtrete 14 in. W X 25 in. H X 1 in. Polypropylene 300 MPR Pleated Air Filter

MPN: 304-4

$25.80 $30.36
15% OFF Case of 4 · with code
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Filtrete 18 in. W X 24 in. H X 1 in. 300 MPR Pleated Air Filter
4 per case
Ships Today

Filtrete

Filtrete 18 in. W X 24 in. H X 1 in. 300 MPR Pleated Air Filter

MPN: 321-4

$25.80 $30.36
15% OFF Case of 4 · with code
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Filtrete 20 in. W X 25 in. H X 1 in. 5 MERV Pleated Air Filter
4 per case
Ships Today

3M

Filtrete 20 in. W X 25 in. H X 1 in. 5 MERV Pleated Air Filter

MPN: 303-4

$25.80 $30.36
15% OFF Case of 4 · with code
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Filtrete 20 in. W X 20 in. H X 1 in. 300 MPR Pleated Filter Dust
4 per case
Ships Today

Filtrete

Filtrete 20 in. W X 20 in. H X 1 in. 300 MPR Pleated Filter Dust

MPN: 302-4

$25.80 $30.36
15% OFF Case of 4 · with code
View Details
Filtrete 14 in. W X 20 in. H X 1 in. 300 MPR Pleated Filter Dust
4 per case
Ships Today

Filtrete

Filtrete 14 in. W X 20 in. H X 1 in. 300 MPR Pleated Filter Dust

MPN: 305-4

$25.80 $30.36
15% OFF Case of 4 · with code
View Details
Filtrete 16 in. W X 25 in. H X 1 in. 300 MPR Pleated Filter Dust
4 per case
Ships Today

Filtrete

Filtrete 16 in. W X 25 in. H X 1 in. 300 MPR Pleated Filter Dust

MPN: 301-4

$25.80 $30.36
15% OFF Case of 4 · with code
View Details
Filtrete 16 in. W X 20 in. H X 1 in. 300 MPR Pleated Filter Dust
4 per case
Ships Today

Filtrete

Filtrete 16 in. W X 20 in. H X 1 in. 300 MPR Pleated Filter Dust

MPN: 300-4

$25.80 $30.36
15% OFF Case of 4 · with code
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NaturalAire 18 in. W X 20 in. H X 1 in. Synthetic 8 MERV Pleated Air Filter
12 per case USA
Ships Today

Naturalaire

NaturalAire 18 in. W X 20 in. H X 1 in. Synthetic 8 MERV Pleated Air Filter

MPN: 84858.011820

$132.49 $155.88
15% OFF Case of 12 · with code
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AAF Flanders PREpleat LPD SC M10 20 in. W X 20 in. H X 4 in. Synthetic 10 MERV Pleated Air Filter 1
6 per case USA
Ships Today

Aaf Flanders

AAF Flanders PREpleat LPD SC M10 20 in. W X 20 in. H X 4 in. Synthetic 10 MERV Pleated Air Filter 1

MPN: 80055.042020

$86.64 $101.94
15% OFF Case of 6 · with code
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Flanders 20 in. W X 20 in. H X 4.5 in. Synthetic 8 MERV Pleated Air Cleaner Cartridge
2 per case USA
Ships Today

Flanders

Flanders 20 in. W X 20 in. H X 4.5 in. Synthetic 8 MERV Pleated Air Cleaner Cartridge

MPN: 82655.0452020

$44.18 $51.98
15% OFF Case of 2 · with code
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AAF Flanders PREpleat LPD SC M10 20 in. W X 25 in. H X 4 in. Synthetic 10 MERV Pleated Air Filter 1
6 per case USA
Ships Today

Aaf Flanders

AAF Flanders PREpleat LPD SC M10 20 in. W X 25 in. H X 4 in. Synthetic 10 MERV Pleated Air Filter 1

MPN: 80055.042025

$91.74 $107.94
15% OFF Case of 6 · with code
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AAF Flanders PREpleat LPD SC M10 16 in. W X 20 in. H X 4 in. Synthetic 10 MERV Pleated Air Filter 1
6 per case USA
Ships Today

Aaf Flanders

AAF Flanders PREpleat LPD SC M10 16 in. W X 20 in. H X 4 in. Synthetic 10 MERV Pleated Air Filter 1

MPN: 80055.041620

$81.54 $95.94
15% OFF Case of 6 · with code
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Filtrete 18 in. W X 18 in. H X 1 in. Polypropylene 1000 MPR Pleated Air Filter
4 per case
Ships Today

Filtrete

Filtrete 18 in. W X 18 in. H X 1 in. Polypropylene 1000 MPR Pleated Air Filter

MPN: 9817-4

$50.96 $59.96
15% OFF Case of 4 · with code
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Flanders EZ Flow II 10 in. W X 10 in. H X 1 in. Fiberglass 1 MERV Air Filter
12 per case USA
Ships Today

Flanders

Flanders EZ Flow II 10 in. W X 10 in. H X 1 in. Fiberglass 1 MERV Air Filter

MPN: 10055.011010

$30.49 $35.88
15% OFF Case of 12 · with code
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AAF Flanders PREpleat LPD SC M10 20 in. W X 24 in. H X 2 in. Synthetic 10 MERV Pleated Air Filter 1
12 per case USA
Ships Today

Aaf Flanders

AAF Flanders PREpleat LPD SC M10 20 in. W X 24 in. H X 2 in. Synthetic 10 MERV Pleated Air Filter 1

MPN: 80055.022024

$91.69 $107.88
15% OFF Case of 12 · with code
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Flanders EZ Flow II 18 in. W X 18 in. H X 1 in. Fiberglass 1 MERV Air Filter
12 per case USA
Ships Today

Flanders

Flanders EZ Flow II 18 in. W X 18 in. H X 1 in. Fiberglass 1 MERV Air Filter

MPN: 10055.011818

$36.61 $43.08
15% OFF Case of 12 · with code
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Flanders EZ Flow II 18 in. W X 20 in. H X 1 in. Fiberglass 1 MERV Air Filter
12 per case USA
Ships Today

Flanders

Flanders EZ Flow II 18 in. W X 20 in. H X 1 in. Fiberglass 1 MERV Air Filter

MPN: 10055.011820

$36.61 $43.08
15% OFF Case of 12 · with code
View Details
Flanders EZ Flow II 20 in. W X 22-1/4 in. H X 1 in. Fiberglass 1 MERV Air Filter
12 per case USA
Ships Today

Flanders

Flanders EZ Flow II 20 in. W X 22-1/4 in. H X 1 in. Fiberglass 1 MERV Air Filter

MPN: 10055.01202214

$40.69 $47.88
15% OFF Case of 12 · with code
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Filtrete 15 in. W X 20 in. H X 1 in. 1500 MPR Pleated Air Filter
4 per case USA
Ships Today

Filtrete

Filtrete 15 in. W X 20 in. H X 1 in. 1500 MPR Pleated Air Filter

MPN: 2006DC-4

$74.76 $87.96
15% OFF Case of 4 · with code
View Details
Flanders EZ Flow II 20 in. W X 22 in. H X 1 in. Fiberglass 1 MERV Air Filter
USA
In-Store

Flanders

Flanders EZ Flow II 20 in. W X 22 in. H X 1 in. Fiberglass 1 MERV Air Filter

MPN: 10055.012022

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About our directory. National Hardware Group is an independent retailer and directory. The local stores we list and link to are separately owned and operated — we have no ownership stake in any of them, and most pay us nothing to be included. That includes plenty of stores flying a co-op banner that people don't realize are locally owned and run, not operated by a corporation. Store owners can choose to upgrade their listing for an enhanced presence or pickup features, but the base directory is free, and inclusion is never a paid endorsement.

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