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Shop Local. Support Independent. 26 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.

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26 products
AAF Flanders PREpleat LPD SC M10 24 in. W X 20 in. H X 1 in. Synthetic 10 MERV Pleated Air Filter 1
USA
In-Store

Aaf Flanders

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

MPN: 80055.012024

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True Blue 16 in. W X 20 in. H X 1 in. Fiberglass 2 MERV Air Filter
USA
In-Store

True Blue

True Blue 16 in. W X 20 in. H X 1 in. Fiberglass 2 MERV Air Filter

MPN: 116201

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AAF Flanders EZ Flow Nested 16 in. W X 25 in. H X 1 in. Fiberglass 1 MERV Air Filter
USA
In-Store

Aaf Flanders

AAF Flanders EZ Flow Nested 16 in. W X 25 in. H X 1 in. Fiberglass 1 MERV Air Filter

MPN: 10059.011625

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NaturalAire 22 in. W X 22 in. H X 1 in. Synthetic 8 MERV Pleated Air Filter
USA
In-Store

Naturalaire

NaturalAire 22 in. W X 22 in. H X 1 in. Synthetic 8 MERV Pleated Air Filter

MPN: 84858.012222

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
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AAF Flanders PREpleat LPD SC M10 12 in. W X 20 in. H X 2 in. Synthetic 10 MERV Pleated Air Filter 1
USA
In-Store

Aaf Flanders

AAF Flanders PREpleat LPD SC M10 12 in. W X 20 in. H X 2 in. Synthetic 10 MERV Pleated Air Filter 1

MPN: 80055.021220

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
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AAF Flanders PREpleat LPD SC M10 18 in. W X 20 in. H X 2 in. Synthetic 10 MERV Pleated Air Filter 1
USA
In-Store

Aaf Flanders

AAF Flanders PREpleat LPD SC M10 18 in. W X 20 in. H X 2 in. Synthetic 10 MERV Pleated Air Filter 1

MPN: 80055.021820

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
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AAF Flanders PREpleat LPD SC M10 18 in. W X 18 in. H X 2 in. Synthetic 10 MERV Pleated Pre-Pleat Fil
USA
In-Store

Aaf Flanders

AAF Flanders PREpleat LPD SC M10 18 in. W X 18 in. H X 2 in. Synthetic 10 MERV Pleated Pre-Pleat Fil

MPN: 80055.021818

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
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Flanders 16 in. W X 20 in. H X 4-1/2 in. Synthetic 8 MERV Pleated Air Filter
USA
In-Store

Flanders

Flanders 16 in. W X 20 in. H X 4-1/2 in. Synthetic 8 MERV Pleated Air Filter

MPN: 82655.0451620

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
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Filtrete 20 in. W X 36 in. H X 1 in. 1000 MPR Pleated Allergen Air Filter
In-Store

Filtrete

Filtrete 20 in. W X 36 in. H X 1 in. 1000 MPR Pleated Allergen Air Filter

MPN: AL43-4

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Filtrete 18 in. W X 18 in. H X 1 in. 1500 MPR Pleated Ultra Allergen Filter
USA
In-Store

Filtrete

Filtrete 18 in. W X 18 in. H X 1 in. 1500 MPR Pleated Ultra Allergen Filter

MPN: 2017-4

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Flanders 24 in. W X 300 in. H X 1 in. Polyester 4 MERV Air Conditioner Filter
USA
In-Store

Flanders

Flanders 24 in. W X 300 in. H X 1 in. Polyester 4 MERV Air Conditioner Filter

MPN: FR52524

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AAF Flanders PREpleat LPD HC M10 24 in. W X 24 in. H X 2 in. Synthetic 10 MERV Pleated Air Filter 1
USA
In-Store

Aaf Flanders

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

MPN: 80255.022424

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
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BestAir 20 in. W X 25 in. H X 4 in. 13 MERV Pleated Air Filter
USA
In-Store

Bestair

BestAir 20 in. W X 25 in. H X 4 in. 13 MERV Pleated Air Filter

MPN: SG213-BOX-13R

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
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BestAir 20 in. W X 25 in. H X 2 in. 8 MERV Pleated Air Filter
USA
In-Store

Bestair

BestAir 20 in. W X 25 in. H X 2 in. 8 MERV Pleated Air Filter

MPN: BA2-2025-8

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
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BestAir 16 in. W X 20 in. H X 2 in. 8 MERV Pleated Air Filter
USA
In-Store

Bestair

BestAir 16 in. W X 20 in. H X 2 in. 8 MERV Pleated Air Filter

MPN: BA2-1620-8

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
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BestAir 20 in. W X 20 in. H X 2 in. 8 MERV Pleated Air Filter
USA
In-Store

Bestair

BestAir 20 in. W X 20 in. H X 2 in. 8 MERV Pleated Air Filter

MPN: BA2-2020-8

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
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BestAir 25 in. W X 16 in. H X 2 in. 8 MERV Pleated Air Filter
USA
In-Store

Bestair

BestAir 25 in. W X 16 in. H X 2 in. 8 MERV Pleated Air Filter

MPN: BA2-1625-8

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
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BestAir XPANDA 16 in. W X 28 in. H X 4 in. 13 MERV Pleated Air Filter
USA
In-Store

Bestair

BestAir XPANDA 16 in. W X 28 in. H X 4 in. 13 MERV Pleated Air Filter

MPN: AXP-413-13R-2

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
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NaturalAire 10 in. W X 30 in. H X 1 in. Synthetic 8 MERV Pleated Air Filter
USA
In-Store

Naturalaire

NaturalAire 10 in. W X 30 in. H X 1 in. Synthetic 8 MERV Pleated Air Filter

MPN: 84858.011030

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
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AAF Flanders PREpleat LPD SC M10 24 in. W X 24 in. H X 2 in. Synthetic 10 MERV Pleated Air Filter 1
USA
In-Store

Aaf Flanders

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

MPN: 80055.022424

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
Find a Local Dealer
NaturalAire 10 in. W X 24 in. H X 1 in. Synthetic 8 MERV Pleated Air Filter
USA
In-Store

Naturalaire

NaturalAire 10 in. W X 24 in. H X 1 in. Synthetic 8 MERV Pleated Air Filter

MPN: 84858.011024

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
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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
Filtrete 12 in. W X 12 in. H X 1 in. 1500 MPR Pleated Ultra Allergen Filter
USA
In-Store

Filtrete

Filtrete 12 in. W X 12 in. H X 1 in. 1500 MPR Pleated Ultra Allergen Filter

MPN: 2010-4

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
Find a Local Dealer
Filtrete 18 in. W X 25 in. H X 1 in. Polypropylene 700 MPR Pleated Air Filter
In-Store

Filtrete

Filtrete 18 in. W X 25 in. H X 1 in. Polypropylene 700 MPR Pleated Air Filter

MPN: 746-4

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
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Related categories

New ProductsPleated 1in FiltersPlumbing & HeatingFiberglass 1in FiltersPleated 2in FiltersPleated 3-5in FiltersFurnance Filter Accessories
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