what-is-the-best-20x20x1-air-filter

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12 Pack Flanders Precisionaire Nested Glass Air Filter - 20" x 20" x 1", Green
12 Pack Flanders Precisionaire Nested Glass Air Filter - 20" x 20" x 1", Green

$29.99

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Air Care Permanent Washable Air Filter Merv 8 20" x 20" x 1"
Air Care Permanent Washable Air Filter Merv 8 20" x 20" x 1"

$33.03

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(4/12 Pack) Flanders Precisionaire Nested Glass Air Filter 20" x 20" x 1", Green
(4/12 Pack) Flanders Precisionaire Nested Glass Air Filter 20" x 20" x 1", Green

$32.97

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(12 Pack) Flanders Precisionaire Nested Glass Air Filter - 20" x 20" x 1", Green
(12 Pack) Flanders Precisionaire Nested Glass Air Filter - 20" x 20" x 1", Green

$28.99

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Flanders Air Filters,20" x 20" x 1" Precisionaire Nested Glass - ( 12 Pack )
Flanders Air Filters,20" x 20" x 1" Precisionaire Nested Glass - ( 12 Pack )

$12.97

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AAF Flanders, 20" x 25" x 1" Nested Glass MERV 1 Air Filter, 4 Pack
AAF Flanders, 20" x 25" x 1" Nested Glass MERV 1 Air Filter, 4 Pack

$10.72

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Precisionaire 20" x 20" x 1" Nested Glass Air Filter (2Pack), Green
Precisionaire 20" x 20" x 1" Nested Glass Air Filter (2Pack), Green

$29.56

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(4/12 Pack) Flanders Precisionaire Nested Glass Air Filter 20" x 20" x 1", Green
(4/12 Pack) Flanders Precisionaire Nested Glass Air Filter 20" x 20" x 1", Green

$11.99

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20 X 20 X 1 Standard Pleated Air Filter [FPR 5] Air Filters 1 OR 4 Filters
20 X 20 X 1 Standard Pleated Air Filter [FPR 5] Air Filters 1 OR 4 Filters

$9.71

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Flanders Air Filters, 20" X 20" X 1" Precisionaire Nested Glass - 4 Pack.
Flanders Air Filters, 20" X 20" X 1" Precisionaire Nested Glass - 4 Pack.

$11.99

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Flanders (4 Filters), 20" X 20" X 1" Precisionaire Nested Glass Air Filter
Flanders (4 Filters), 20" X 20" X 1" Precisionaire Nested Glass Air Filter

$14.49

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Precisionaire 20" x 20" x 1" Nested Glass Air Filters, Green
Precisionaire 20" x 20" x 1" Nested Glass Air Filters, Green

$19.64

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Air-Care 20 in. x 20 in. x 1 in. Flexible Permanent Washable Air Filter MERV 8
Air-Care 20 in. x 20 in. x 1 in. Flexible Permanent Washable Air Filter MERV 8

$40.00

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Filter Everything Washable Aluminum Air Filter - 20 x 20 x 1
Filter Everything Washable Aluminum Air Filter - 20 x 20 x 1

$69.03

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12 Pack Flanders Precisionaire Nested Glass Air Filter - 20" x 20" x 1", Green
12 Pack Flanders Precisionaire Nested Glass Air Filter - 20" x 20" x 1", Green

$31.95

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(12 Pack) Flanders Precisionaire Nested Glass Air Filter - 20" x 20" x 1", Green
(12 Pack) Flanders Precisionaire Nested Glass Air Filter - 20" x 20" x 1", Green

$28.99

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Flanders Air Filters, 20" X 20" X 1" Precisionaire Nested Glass
Flanders Air Filters, 20" X 20" X 1" Precisionaire Nested Glass

$9.88

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AAF Flanders, 20" x 25" x 1" Nested Glass MERV 1 Air Filter, 4 Pack
AAF Flanders, 20" x 25" x 1" Nested Glass MERV 1 Air Filter, 4 Pack

$10.38

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Flanders Air Filters, 20" X 20" X 1" Precisionaire Nested Glass - ( 4 Pack )
Flanders Air Filters, 20" X 20" X 1" Precisionaire Nested Glass - ( 4 Pack )

$28.99

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New 20 X 20 X 1 Standard Pleated Air Filter Fpr 5 3-pack Air Filters Replacement
New 20 X 20 X 1 Standard Pleated Air Filter Fpr 5 3-pack Air Filters Replacement

$14.11

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BestAir 20 in. W x 20 in. H x 4 in. D 8 MERV Pleated Air Filter (Pack of 3)
BestAir 20 in. W x 20 in. H x 4 in. D 8 MERV Pleated Air Filter (Pack of 3)

$35.60

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Flanders Air Filters,20" x 20" x 1" Precision Air Nested Glass -Packs- 4/8/12
Flanders Air Filters,20" x 20" x 1" Precision Air Nested Glass -Packs- 4/8/12

$23.99

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20 x 20 x 1 Standard Pleated Air Filter FPR 5, 3-Pack, Air Filters Replacement
20 x 20 x 1 Standard Pleated Air Filter FPR 5, 3-Pack, Air Filters Replacement

$17.99

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AAF Flanders, 20" X 25" X 1" Nested Glass MERV 1 Air Filter, 4 Pack
AAF Flanders, 20" X 25" X 1" Nested Glass MERV 1 Air Filter, 4 Pack

$11.80

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AAF Nested Fiberglass MERV 1 Air Filter - 20" x 20" x 1" (Pack of 4 Filters)
AAF Nested Fiberglass MERV 1 Air Filter - 20" x 20" x 1" (Pack of 4 Filters)

$18.95

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AAF  Nested Fiberglass Air Filter, Size 20" X 20" X 1" (4 Filters),
AAF Nested Fiberglass Air Filter, Size 20" X 20" X 1" (4 Filters),

$12.84

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AAF Flanders Nested FiberGlass MERV 1 Air Filter, size 20" x 20" x 1"(4 Filters)
AAF Flanders Nested FiberGlass MERV 1 Air Filter, size 20" x 20" x 1"(4 Filters)

$10.84

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UNBRANDED 20" X 20" X 1" AIR FILTER LOT OF 23
UNBRANDED 20" X 20" X 1" AIR FILTER LOT OF 23

$45.00

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New 20 X 20 X 1 Standard Pleated Air Filter Fpr 5 3-pack Air Filters Replacement
New 20 X 20 X 1 Standard Pleated Air Filter Fpr 5 3-pack Air Filters Replacement

$19.99

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HDX 20 in. x 20 in. x 1 in. Superior Pleated Air Filter FPR 9 (10-Pack) - New
HDX 20 in. x 20 in. x 1 in. Superior Pleated Air Filter FPR 9 (10-Pack) - New

$89.00

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AAF Flanders, 20" x 25" x 1" Nested Glass MERV 1 Air Filter, 4 Pack
AAF Flanders, 20" x 25" x 1" Nested Glass MERV 1 Air Filter, 4 Pack

$13.85

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20" x 25" x 1" Nested Glass MERV 1 Air Filter, AAF  4 Pack
20" x 25" x 1" Nested Glass MERV 1 Air Filter, AAF 4 Pack

$9.42

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Flanders Air Filters, 20" X 20" X 1" Precisionaire Nested Glass
Flanders Air Filters, 20" X 20" X 1" Precisionaire Nested Glass

$12.60

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20"x20"x2" MERV 8 EQP 40 Furnace Air Filter (20 by 20 by 2)          Case of 12
20"x20"x2" MERV 8 EQP 40 Furnace Air Filter (20 by 20 by 2) Case of 12

$20.00

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20 x 20 x 1 Standard Pleated Air Filter FPR 5, 3-Pack, Air Filters Replacement
20 x 20 x 1 Standard Pleated Air Filter FPR 5, 3-Pack, Air Filters Replacement

$16.76

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AAF Nested Fiberglass Air Filter, Size 20" X 20" X 1" (4 Filters),
AAF Nested Fiberglass Air Filter, Size 20" X 20" X 1" (4 Filters),

$11.47

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(3-Pack) Standard Pleated Air Filter FPR 5 Home Improvement 20 x 20 x 1 Inch
(3-Pack) Standard Pleated Air Filter FPR 5 Home Improvement 20 x 20 x 1 Inch

$17.99

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20" X 20" X 1" Home Air Filter -Lot of Six (6) -High Quality -Brand New- MERV 13
20" X 20" X 1" Home Air Filter -Lot of Six (6) -High Quality -Brand New- MERV 13

$45.00

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Effortless Installation MERV 8 20x20x1 Reusable Air Filter for Offices & Homes
Effortless Installation MERV 8 20x20x1 Reusable Air Filter for Offices & Homes

$75.99

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Flanders (4 Filters), 20" X 20" X 1" Precisionaire Nested Glass Air Filter USA
Flanders (4 Filters), 20" X 20" X 1" Precisionaire Nested Glass Air Filter USA

$50.19

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AAF AAF Flanders Nested FiberGlass MERV 1 Air Filter 20"x 20"x 1", 4 Filters 2pk
AAF AAF Flanders Nested FiberGlass MERV 1 Air Filter 20"x 20"x 1", 4 Filters 2pk

$19.99

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20 in. x 20 in. x 1 in. Fiberglass Air Filter MERV 1
20 in. x 20 in. x 1 in. Fiberglass Air Filter MERV 1

$3.99

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New 20 X 20 X 1 Standard Pleated Air Filter Fpr 5 3-pack Air Filters Replacement
New 20 X 20 X 1 Standard Pleated Air Filter Fpr 5 3-pack Air Filters Replacement

$16.76

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AIR HANDLER AIR FILTER, 20 X 20 X 2, LOT OF 14
AIR HANDLER AIR FILTER, 20 X 20 X 2, LOT OF 14

$50.00

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20" x 25" x 1" Nested Glass MERV 1 Air Filter, AAF  4 Pack
20" x 25" x 1" Nested Glass MERV 1 Air Filter, AAF 4 Pack

$10.10

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AAF Flanders Nested FiberGlass MERV 1 Air Filter, size 20" x 20" x 1"(4 Filters)
AAF Flanders Nested FiberGlass MERV 1 Air Filter, size 20" x 20" x 1"(4 Filters)

$11.80

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20x20x1 air filter washable selling because i bought wrong size , paid 60.00
20x20x1 air filter washable selling because i bought wrong size , paid 60.00

$35.00

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AAF Flanders 80055.01202 Fiberglass Air Filter 20 x 20 x 1 in. (Pack of 12)
AAF Flanders 80055.01202 Fiberglass Air Filter 20 x 20 x 1 in. (Pack of 12)

$77.59

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Bestair 20 In. H X 20 In. W X 1 In. D 8 Merv Air Filter (Pack Of 12)
Bestair 20 In. H X 20 In. W X 1 In. D 8 Merv Air Filter (Pack Of 12)

$70.97

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AAF  Nested Fiberglass Air Filter, Size 20" X 20" X 1" (4 Filters),
AAF Nested Fiberglass Air Filter, Size 20" X 20" X 1" (4 Filters),

$17.47

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4 Pack Flanders Precisionaire Nested Glass Air Filter - 20" x 25" x 1"
4 Pack Flanders Precisionaire Nested Glass Air Filter - 20" x 25" x 1"

$150.88

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Air-Care 20 in 20 in x 1 in Flexible Permanent Washable Air Filter MERV8 NEW!
Air-Care 20 in 20 in x 1 in Flexible Permanent Washable Air Filter MERV8 NEW!

$34.99

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AAF Flanders Nested FiberGlass MERV 1 Air Filter 20" x 20" x 1" 4 Filters 2 pac
AAF Flanders Nested FiberGlass MERV 1 Air Filter 20" x 20" x 1" 4 Filters 2 pac

$26.88

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New 20 X 20 X 1 Standard Pleated Air Filter Fpr 5 3-pack Air Filters Replacement
New 20 X 20 X 1 Standard Pleated Air Filter Fpr 5 3-pack Air Filters Replacement

$12.50

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HDX 20 in. x 25 in. x 1 in. Superior Pleated Air Filter FPR 9 (Case of 3)
HDX 20 in. x 25 in. x 1 in. Superior Pleated Air Filter FPR 9 (Case of 3)

$27.99

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20" X 25" X 1" AAF Flanders MERV 1 Air Filter UL Class 2 4 Pack New Nested Glass
20" X 25" X 1" AAF Flanders MERV 1 Air Filter UL Class 2 4 Pack New Nested Glass

$13.40

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(2 pk)AAF Flanders Nested FiberGlass MERV 1 Air Filter,size 20"x 20"x1. 4 Filter
(2 pk)AAF Flanders Nested FiberGlass MERV 1 Air Filter,size 20"x 20"x1. 4 Filter

$20.49

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Fast-Shipped-Filters 10 Pack One Hour Air Cleaner Replacement Filters Blue
Fast-Shipped-Filters 10 Pack One Hour Air Cleaner Replacement Filters Blue

$179.95

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  Precisionaire Nested Fiberglass Flanders Air Filter 20"x 20"x 1" (4 Filters)
Precisionaire Nested Fiberglass Flanders Air Filter 20"x 20"x 1" (4 Filters)

$18.81

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20" x 25" x 1" Nested Glass MERV 1 Air Filter, AAF  4 Pack
20" x 25" x 1" Nested Glass MERV 1 Air Filter, AAF 4 Pack

$19.07

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20" x 25" x 1" Nested Glass MERV 1 Air Filter, AAF  4 Pack
20" x 25" x 1" Nested Glass MERV 1 Air Filter, AAF 4 Pack

$22.44

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(3) Pack Honeywell Best Air 20" x 20" x 4" Furnace Air Cleaner Filters
(3) Pack Honeywell Best Air 20" x 20" x 4" Furnace Air Cleaner Filters

$152.90

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AIR FILTERS 20 X 25 X 2" (BOX OF 12)
AIR FILTERS 20 X 25 X 2" (BOX OF 12)

$249.00

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(6) Pack Honeywell Best Air 20" x 20" x 4" Furnace Air Cleaner Filters
(6) Pack Honeywell Best Air 20" x 20" x 4" Furnace Air Cleaner Filters

$294.90

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Fast-Shipped-Filters 10 Perfect Air Plus Air Cleaner Replacement Filters Blue
Fast-Shipped-Filters 10 Perfect Air Plus Air Cleaner Replacement Filters Blue

$179.95

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Long-Lasting 20" x 25" x 1" Washable Air Filter Compatible with Furnaces & ACs
Long-Lasting 20" x 25" x 1" Washable Air Filter Compatible with Furnaces & ACs

$75.99

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BestAir, 20" x 25" x 4" Air Cleaning Furnace Filter, MERV 11, Carbon Infused to
BestAir, 20" x 25" x 4" Air Cleaning Furnace Filter, MERV 11, Carbon Infused to

$56.91

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HDX 20 in. x 25 in. x 1 in. Superior Pleated Air Filter FPR 9 (Case of 6)
HDX 20 in. x 25 in. x 1 in. Superior Pleated Air Filter FPR 9 (Case of 6)

$109.00

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MACHINE WASHABLE AIR FILTER AIRTHREADS 20x20x1
MACHINE WASHABLE AIR FILTER AIRTHREADS 20x20x1

$45.49

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Standard Capacity Air Filter 20"W x 20"H x 1"D Pleated MERV 8 Lot of 12
Standard Capacity Air Filter 20"W x 20"H x 1"D Pleated MERV 8 Lot of 12

$66.72

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Lot Of (2) Air-Care 20 in. x 20 in. x 1 in. Permanent Washable Air Filter Merv 8
Lot Of (2) Air-Care 20 in. x 20 in. x 1 in. Permanent Washable Air Filter Merv 8

$68.00

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New 20 X 20 X 1 Standard Pleated Air Filter Fpr 5 3-pack Air Filters Replacement
New 20 X 20 X 1 Standard Pleated Air Filter Fpr 5 3-pack Air Filters Replacement

$15.49

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Standard Capacity Air Filter 20"W x 20"H x 2"D Pleated MERV 8 Lot of 12
Standard Capacity Air Filter 20"W x 20"H x 2"D Pleated MERV 8 Lot of 12

$88.80

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Flanders Air Filters, 20" X 20" X 1" Precisionaire Nested Glass - ( 4 Pack)
Flanders Air Filters, 20" X 20" X 1" Precisionaire Nested Glass - ( 4 Pack)

$80.00

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BestAir, 20" x 25" x 4" Air Cleaning Furnace Filter, MERV 11, Carbon Infused ...
BestAir, 20" x 25" x 4" Air Cleaning Furnace Filter, MERV 11, Carbon Infused ...

$36.06

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AAF Flanders, 20" X 25" X 1" Nested Glass MERV 1 Air Filter, 4 Pack
AAF Flanders, 20" X 25" X 1" Nested Glass MERV 1 Air Filter, 4 Pack

$10.69

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20" x 25" x 1" Nested Glass MERV 1 Air Filter, AAF  4 Pack
20" x 25" x 1" Nested Glass MERV 1 Air Filter, AAF 4 Pack

$10.10

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