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Shop Local. Support Independent. 338 products available
Furnace Filters

Shop 338 furnace filters at National Hardware Group — from trusted brands like 3M, Aaf Flanders, Aprilaire and more. Every item is an authorized, warranty-backed purchase, with prices starting around $2.99. Ships nationwide, free over $75 on most items, or find it at your local store.

Trusted brands only Ships nationwide Pro accounts welcome Support your local hardware store
338 products
Filtrete 12 in. W X 20 in. H X 1 in. 300 MPR Pleated Air Filter
4 per case

Filtrete

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

MPN: 319-4

$30.36
Save 15% at $75+ Case of 4
Filtrete 18 in. W X 18 in. H X 1 in. 300 MPR Pleated Filter Dust
4 per case

Filtrete

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

MPN: 317-4

$30.36
Save 15% at $75+ Case of 4
Filtrete 14 in. W X 25 in. H X 1 in. Polypropylene 300 MPR Pleated Air Filter
4 per case

Filtrete

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

MPN: 304-4

$30.36
Save 15% at $75+ Case of 4
Filtrete 18 in. W X 24 in. H X 1 in. 300 MPR Pleated Air Filter
4 per case

Filtrete

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

MPN: 321-4

$30.36
Save 15% at $75+ Case of 4
Filtrete 20 in. W X 25 in. H X 1 in. 5 MERV Pleated Air Filter
4 per case

3M

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

MPN: 303-4

$30.36
Save 15% at $75+ Case of 4
Filtrete 20 in. W X 20 in. H X 1 in. 300 MPR Pleated Filter Dust
4 per case

Filtrete

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

MPN: 302-4

$30.36
Save 15% at $75+ Case of 4
Filtrete 14 in. W X 20 in. H X 1 in. 300 MPR Pleated Filter Dust
4 per case

Filtrete

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

MPN: 305-4

$30.36
Save 15% at $75+ Case of 4
Filtrete 16 in. W X 25 in. H X 1 in. 300 MPR Pleated Filter Dust
4 per case

Filtrete

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

MPN: 301-4

$30.36
Save 15% at $75+ Case of 4
Filtrete 16 in. W X 20 in. H X 1 in. 300 MPR Pleated Filter Dust
4 per case

Filtrete

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

MPN: 300-4

$30.36
Save 15% at $75+ Case of 4
NaturalAire 18 in. W X 20 in. H X 1 in. Synthetic 8 MERV Pleated Air Filter
12 per case USA

Naturalaire

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

MPN: 84858.011820

$155.88
Save 15% at $75+ Case of 12
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

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

$101.94
Save 15% at $75+ Case of 6
Flanders 20 in. W X 20 in. H X 4.5 in. Synthetic 8 MERV Pleated Air Cleaner Cartridge
2 per case USA

Flanders

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

MPN: 82655.0452020

$51.98
Save 15% at $75+ Case of 2
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

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

$107.94
Save 15% at $75+ Case of 6
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

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

$95.94
Save 15% at $75+ Case of 6
Filtrete 18 in. W X 18 in. H X 1 in. Polypropylene 1000 MPR Pleated Air Filter
4 per case

Filtrete

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

MPN: 9817-4

$59.96
Save 15% at $75+ Case of 4
Flanders EZ Flow II 10 in. W X 10 in. H X 1 in. Fiberglass 1 MERV Air Filter
12 per case USA

Flanders

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

MPN: 10055.011010

$35.88
Save 15% at $75+ Case of 12
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

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

$107.88
Save 15% at $75+ Case of 12
Flanders EZ Flow II 18 in. W X 18 in. H X 1 in. Fiberglass 1 MERV Air Filter
12 per case USA

Flanders

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

MPN: 10055.011818

$43.08
Save 15% at $75+ Case of 12
Flanders EZ Flow II 18 in. W X 20 in. H X 1 in. Fiberglass 1 MERV Air Filter
12 per case USA

Flanders

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

MPN: 10055.011820

$43.08
Save 15% at $75+ Case of 12
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

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

$47.88
Save 15% at $75+ Case of 12
Filtrete 15 in. W X 20 in. H X 1 in. 1500 MPR Pleated Air Filter
4 per case USA

Filtrete

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

MPN: 2006DC-4

$87.96
Save 15% at $75+ Case of 4
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

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
Find a Local Dealer
Flanders EZ Flow II 14 in. W X 18 in. H X 1 in. Fiberglass 1 MERV Air Filter
12 per case USA

Flanders

Flanders EZ Flow II 14 in. W X 18 in. H X 1 in. Fiberglass 1 MERV Air Filter

MPN: 10055.011418

$55.08
Save 15% at $75+ Case of 12
Filtrete 16 in. W X 24 in. H X 1 in. 1500 MPR Pleated Air Filter
4 per case USA

Filtrete

Filtrete 16 in. W X 24 in. H X 1 in. 1500 MPR Pleated Air Filter

MPN: 2025DC-4

$87.96
Save 15% at $75+ Case of 4
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Related categories

Pleated 1in FiltersPlumbing & HeatingPleated 3-5in FiltersFiberglass 1in Filters
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