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Fiberglass 1in Filters

One inch fiberglass furnace filters in sizes such as 10 by 10, 16 by 20, 20 by 20 and 25 by 25 inches. Flanders EZ Flow filters show a MERV 1 rating and Pamlico Air filters show a MERV 4 rating in their product names.

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72 products
Pamlico Air 18 in. W X 30 in. H X 1 in. Fiberglass 4 MERV Air Filter
12 per case USA

Pamlico Air

Pamlico Air 18 in. W X 30 in. H X 1 in. Fiberglass 4 MERV Air Filter

MPN: 11104-011830

$71.88
Save 15% at $75+ Case of 12
Pamlico Air 20 in. W X 24 in. H X 1 in. Fiberglass 4 MERV Air Filter
12 per case USA

Pamlico Air

Pamlico Air 20 in. W X 24 in. H X 1 in. Fiberglass 4 MERV Air Filter

MPN: 11104-012024

$67.08
Save 15% at $75+ Case of 12
Pamlico Air 20 in. W X 20 in. H X 1 in. Fiberglass 4 MERV Air Filter
12 per case USA

Pamlico Air

Pamlico Air 20 in. W X 20 in. H X 1 in. Fiberglass 4 MERV Air Filter

MPN: 11104-012020

$59.88
Save 15% at $75+ Case of 12
Pamlico Air 18 in. W X 20 in. H X 1 in. Fiberglass 4 MERV Air Filter
12 per case USA

Pamlico Air

Pamlico Air 18 in. W X 20 in. H X 1 in. Fiberglass 4 MERV Air Filter

MPN: 11104-011820

$67.08
Save 15% at $75+ Case of 12
Pamlico Air 16 in. W X 16 in. H X 1 in. Fiberglass 4 MERV Air Filter
12 per case USA

Pamlico Air

Pamlico Air 16 in. W X 16 in. H X 1 in. Fiberglass 4 MERV Air Filter

MPN: 11104-011616

$67.08
Save 15% at $75+ Case of 12
Pamlico Air 18 in. W X 18 in. H X 1 in. Fiberglass 4 MERV Air Filter
12 per case USA

Pamlico Air

Pamlico Air 18 in. W X 18 in. H X 1 in. Fiberglass 4 MERV Air Filter

MPN: 11104-011818

$67.08
Save 15% at $75+ Case of 12
Pamlico Air 16 in. W X 30 in. H X 1 in. Fiberglass 4 MERV Air Filter
12 per case USA

Pamlico Air

Pamlico Air 16 in. W X 30 in. H X 1 in. Fiberglass 4 MERV Air Filter

MPN: 11104-011630

$71.88
Save 15% at $75+ Case of 12
Pamlico Air 16 in. W X 24 in. H X 1 in. Fiberglass 4 MERV Air Filter
12 per case USA

Pamlico Air

Pamlico Air 16 in. W X 24 in. H X 1 in. Fiberglass 4 MERV Air Filter

MPN: 11104-011624

$67.08
Save 15% at $75+ Case of 12
Pamlico Air 16 in. W X 25 in. H X 1 in. Fiberglass 4 MERV Air Filter
12 per case USA

Pamlico Air

Pamlico Air 16 in. W X 25 in. H X 1 in. Fiberglass 4 MERV Air Filter

MPN: 11104-011625

$59.88
Save 15% at $75+ Case of 12
Pamlico Air 14 in. W X 25 in. H X 1 in. Fiberglass 4 MERV Air Filter
12 per case USA

Pamlico Air

Pamlico Air 14 in. W X 25 in. H X 1 in. Fiberglass 4 MERV Air Filter

MPN: 11104-011425

$67.08
Save 15% at $75+ Case of 12
Pamlico Air 14 in. W X 20 in. H X 1 in. Fiberglass 4 MERV Air Filter
12 per case USA

Pamlico Air

Pamlico Air 14 in. W X 20 in. H X 1 in. Fiberglass 4 MERV Air Filter

MPN: 11104-011420

$59.88
Save 15% at $75+ Case of 12
Pamlico Air 15 in. W X 20 in. H X 1 in. Fiberglass 4 MERV Air Filter
12 per case USA

Pamlico Air

Pamlico Air 15 in. W X 20 in. H X 1 in. Fiberglass 4 MERV Air Filter

MPN: 11104-011520

$67.08
Save 15% at $75+ Case of 12
Pamlico Air 14 in. W X 14 in. H X 1 in. Fiberglass 4 MERV Air Filter
12 per case USA

Pamlico Air

Pamlico Air 14 in. W X 14 in. H X 1 in. Fiberglass 4 MERV Air Filter

MPN: 11104-011414

$59.88
Save 15% at $75+ Case of 12
Pamlico Air 14 in. W X 18 in. H X 1 in. Fiberglass 4 MERV Air Filter
12 per case USA

Pamlico Air

Pamlico Air 14 in. W X 18 in. H X 1 in. Fiberglass 4 MERV Air Filter

MPN: 11104-011418

$67.08
Save 15% at $75+ Case of 12
Pamlico Air 12 in. W X 24 in. H X 1 in. Fiberglass 4 MERV Air Filter
12 per case USA

Pamlico Air

Pamlico Air 12 in. W X 24 in. H X 1 in. Fiberglass 4 MERV Air Filter

MPN: 11104-011224

$67.08
Save 15% at $75+ Case of 12
Pamlico Air 12 in. W X 20 in. H X 1 in. Fiberglass 4 MERV Air Filter
12 per case USA

Pamlico Air

Pamlico Air 12 in. W X 20 in. H X 1 in. Fiberglass 4 MERV Air Filter

MPN: 11104-011220

$59.88
Save 15% at $75+ Case of 12
Pamlico Air 12 in. W X 18 in. H X 1 in. Fiberglass 4 MERV Air Filter
12 per case USA

Pamlico Air

Pamlico Air 12 in. W X 18 in. H X 1 in. Fiberglass 4 MERV Air Filter

MPN: 11104-011218

$59.88
Save 15% at $75+ Case of 12
Pamlico Air 10 in. W X 20 in. H X 1 in. Fiberglass 4 MERV Air Filter
12 per case USA

Pamlico Air

Pamlico Air 10 in. W X 20 in. H X 1 in. Fiberglass 4 MERV Air Filter

MPN: 11104-011020

$59.88
Save 15% at $75+ Case of 12
Pamlico Air 12 in. W X 12 in. H X 1 in. Fiberglass 4 MERV Air Filter
12 per case USA

Pamlico Air

Pamlico Air 12 in. W X 12 in. H X 1 in. Fiberglass 4 MERV Air Filter

MPN: 11104-011212

$59.88
Save 15% at $75+ Case of 12
Pamlico Air 10 in. W X 30 in. H X 1 in. Fiberglass 4 MERV Air Filter
12 per case USA

Pamlico Air

Pamlico Air 10 in. W X 30 in. H X 1 in. Fiberglass 4 MERV Air Filter

MPN: 11104-011030

$59.88
Save 15% at $75+ Case of 12
Filtrete 20 in. W X 20 in. H X 1 in. Synthetic 2 MERV Flat Panel Filter 2 pk
24 per case

Filtrete

Filtrete 20 in. W X 20 in. H X 1 in. Synthetic 2 MERV Flat Panel Filter 2 pk

MPN: FPL02-2PK-24

$158.16
Save 15% at $75+ Case of 24
Filtrete 16 in. W X 25 in. H X 1 in. Synthetic 2 MERV Flat Panel Filter 2 pk
24 per case

Filtrete

Filtrete 16 in. W X 25 in. H X 1 in. Synthetic 2 MERV Flat Panel Filter 2 pk

MPN: FPL01-2PK-24

$158.16
Save 15% at $75+ Case of 24
Filtrete 16 in. W X 20 in. H X 1 in. Synthetic 2 MERV Flat Panel Filter 2 pk
24 per case

Filtrete

Filtrete 16 in. W X 20 in. H X 1 in. Synthetic 2 MERV Flat Panel Filter 2 pk

MPN: FPL00-2PK-24

$158.16
Save 15% at $75+ Case of 24
AAF Flanders EZ Flow Nested 20 in. W X 16 in. H X 1 in. Fiberglass 1 MERV Air Filter
24 per case USA

Aaf Flanders

AAF Flanders EZ Flow Nested 20 in. W X 16 in. H X 1 in. Fiberglass 1 MERV Air Filter

MPN: 10059.011620

$71.76
Save 15% at $75+ Case of 24

More About This Collection Fiberglass 1in Filters

One inch fiberglass furnace filters in sizes such as 10 by 10, 16 by 20, 20 by 20 and 25 by 25 inches. Flanders EZ Flow filters show a MERV 1 rating and Pamlico Air filters show a MERV 4 rating in their product names.

Check the size printed on the edge of your old filter, including thickness, and pick the matching product. Aaf Flanders nested filters are here too.

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