18x20x1-air-filter

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Aerostar 18x20x1 MERV 6 Pleated Air Filter, AC Furnace Air Filter, 6 Pack
Aerostar 18x20x1 MERV 6 Pleated Air Filter, AC Furnace Air Filter, 6 Pack

$28.78

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Filterbuy 18x20x1 Pleated Air Filters, Replacement for HVAC AC Furnace (MERV 8)
Filterbuy 18x20x1 Pleated Air Filters, Replacement for HVAC AC Furnace (MERV 8)

$28.18

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Aerostar 18x20x1 MERV 11 Furnace Air Filter, 6 Pack
Aerostar 18x20x1 MERV 11 Furnace Air Filter, 6 Pack

$38.41

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Aerostar 18x20x1 MERV 6 Pleated Air Filter, AC Furnace Air Filter, 12 Pack
Aerostar 18x20x1 MERV 6 Pleated Air Filter, AC Furnace Air Filter, 12 Pack

$57.54

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(3-PACK) 18x20x1 Air Filter Pleated Standard AC Furnace Filtro de aire Plisados
(3-PACK) 18x20x1 Air Filter Pleated Standard AC Furnace Filtro de aire Plisados

$14.77

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Pleated Air Filters Replacement For Furnace. AC HVAC MERV 8 FPR 5 3-Pack New
Pleated Air Filters Replacement For Furnace. AC HVAC MERV 8 FPR 5 3-Pack New

$13.96

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1 PACK or 3 PACK - Air Filter Standard Pleated FPR 5 Dust Filters Furnace AC
1 PACK or 3 PACK - Air Filter Standard Pleated FPR 5 Dust Filters Furnace AC

$12.77

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PERMANENT WASHABLE ELECTROSTATIC FURNACE AC AIR FILTER Dust Electronic
PERMANENT WASHABLE ELECTROSTATIC FURNACE AC AIR FILTER Dust Electronic

$49.95

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Pleated Air Filters Replacement For Furnace. AC HVAC MERV 8 FPR 5 3-Pack New
Pleated Air Filters Replacement For Furnace. AC HVAC MERV 8 FPR 5 3-Pack New

$13.40

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Pleated Air Filters Replacement For Furnace. AC HVAC MERV 8 FPR 5 3-Pack
Pleated Air Filters Replacement For Furnace. AC HVAC MERV 8 FPR 5 3-Pack

$13.49

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Aerostar 18x20x1 MERV 8 Pleated Air Filter, MPR 600 AC Furnace Air Filter 6 Pack
Aerostar 18x20x1 MERV 8 Pleated Air Filter, MPR 600 AC Furnace Air Filter 6 Pack

$27.99

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Pleated Air Filters Replacement For Furnace. AC HVAC MERV 8 FPR 5, 1-Pack New
Pleated Air Filters Replacement For Furnace. AC HVAC MERV 8 FPR 5, 1-Pack New

$7.72

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Filterbuy 18x20x1 Pleated Air Filters, Replacement for HVAC AC Furnace (MERV 11)
Filterbuy 18x20x1 Pleated Air Filters, Replacement for HVAC AC Furnace (MERV 11)

$34.26

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Aerostar 18x20x1 MERV 8 Furnace Air Filter, 4 Pack
Aerostar 18x20x1 MERV 8 Furnace Air Filter, 4 Pack

$34.56

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18x20x1 MERV 8 Pleated AC Furnace Air Filters. 6 Pack. Made in USA.
18x20x1 MERV 8 Pleated AC Furnace Air Filters. 6 Pack. Made in USA.

$39.97

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18x20x1 Aluminum Electrostatic Air Filter for Furnace & Central Air Conditioner
18x20x1 Aluminum Electrostatic Air Filter for Furnace & Central Air Conditioner

$37.99

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Permanent Washable Electrostatic Furnace Ac Air Filter Replacement Multi Sizes
Permanent Washable Electrostatic Furnace Ac Air Filter Replacement Multi Sizes

$38.99

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3-Pack Standard Pleated Air Filter 18x20x1, Air Filters Replacement FPR 5 MERV 8
3-Pack Standard Pleated Air Filter 18x20x1, Air Filters Replacement FPR 5 MERV 8

$14.39

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(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro de aire Plisados
(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro de aire Plisados

$14.21

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(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro de aire Plisados
(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro de aire Plisados

$15.20

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18x20x1 Inch Standard Pleated Air Filter FPR 5, MERV 8 Moisture Resistant Frame
18x20x1 Inch Standard Pleated Air Filter FPR 5, MERV 8 Moisture Resistant Frame

$6.12

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New 18x20x1 Air Filter Standard Pleated Furnace Ac (3-pack) Best Filtro De Aire
New 18x20x1 Air Filter Standard Pleated Furnace Ac (3-pack) Best Filtro De Aire

$15.07

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(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro de aire Plisados
(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro de aire Plisados

$17.99

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(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro de aire Plisados
(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro de aire Plisados

$14.35

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Filtrete Air-Filter Basic Pleated Furnace Replacement Pad Dust Pack Lot 3M 6 12
Filtrete Air-Filter Basic Pleated Furnace Replacement Pad Dust Pack Lot 3M 6 12

$12.99

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Pleated Air Filters Replacement For Furnace. AC HVAC MERV 8 FPR 5, 3-Pack New
Pleated Air Filters Replacement For Furnace. AC HVAC MERV 8 FPR 5, 3-Pack New

$13.95

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(3-PACK) 18x20x1 - Standard Pleated Furnace Air Filter FPR 5, MERV 8
(3-PACK) 18x20x1 - Standard Pleated Furnace Air Filter FPR 5, MERV 8

$11.45

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(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro de aire Plisados
(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro de aire Plisados

$15.49

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Life Air Filters Electrostatic Washable HEPA Filter Custom Sizes, Made in USA
Life Air Filters Electrostatic Washable HEPA Filter Custom Sizes, Made in USA

$44.82

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18x20x1 AC and Furnace Air Filter by Aerostar - MERV 8, Box of 12
18x20x1 AC and Furnace Air Filter by Aerostar - MERV 8, Box of 12

$71.46

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18x20x1 AC and Furnace Air Filter by Aerostar - MERV 11, Box of 12
18x20x1 AC and Furnace Air Filter by Aerostar - MERV 11, Box of 12

$79.76

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Filter King 18x20x1 Air Filter 6-PACK MERV 13 Actual Size 17.5 x 19.5 x .75"
Filter King 18x20x1 Air Filter 6-PACK MERV 13 Actual Size 17.5 x 19.5 x .75"

$49.94

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(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro de aire Plisados
(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro de aire Plisados

$15.08

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18x20x1 Pleated Air Filters Replacement For Furnace. AC HVAC MERV 8 FPR 5 3-Pack
18x20x1 Pleated Air Filters Replacement For Furnace. AC HVAC MERV 8 FPR 5 3-Pack

$16.76

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1" Inch Glasfloss ZL MERV 10 Pleated Air Filters for AC & Furnace. 6 Pack
1" Inch Glasfloss ZL MERV 10 Pleated Air Filters for AC & Furnace. 6 Pack

$44.98

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Nordic Pure 18x20x1 MERV 14 Air Filter, AC Furnace Air Filter, 2 Pack
Nordic Pure 18x20x1 MERV 14 Air Filter, AC Furnace Air Filter, 2 Pack

$8.50

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(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro - FREE SHIPPING
(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro - FREE SHIPPING

$17.99

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Aerostar 18x20x1 MERV 13 Furnace Air Filter, 7 Pack
Aerostar 18x20x1 MERV 13 Furnace Air Filter, 7 Pack

$38.88

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Aerostar 18x20x1 MERV 13 Air Filter, 12 Pack (17 3/2" x 19 3/2" x 3/4")
Aerostar 18x20x1 MERV 13 Air Filter, 12 Pack (17 3/2" x 19 3/2" x 3/4")

$87.28

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NEW 6 Pack, Aerostar 18x20x1 MERV 11 Furnace Air Filter, 6 Pack
NEW 6 Pack, Aerostar 18x20x1 MERV 11 Furnace Air Filter, 6 Pack

$19.99

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3M Filtrete MPR 300 Merv 5 Basic Air Filter Reduce Lint Dust Mite Debris
3M Filtrete MPR 300 Merv 5 Basic Air Filter Reduce Lint Dust Mite Debris

$14.99

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18x20x1 (17_1/2x19_1/2) Pleated MERV 12 Air Filters 3 Pack
18x20x1 (17_1/2x19_1/2) Pleated MERV 12 Air Filters 3 Pack

$41.99

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New 18x20x1 Air Filter Standard Pleated Furnace Ac (3-pack) Best Filtro De Aire
New 18x20x1 Air Filter Standard Pleated Furnace Ac (3-pack) Best Filtro De Aire

$14.35

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18"x 20"x 1" 2-Pack AC Furnace Air Filter Rigid Washable Cut to Fit
18"x 20"x 1" 2-Pack AC Furnace Air Filter Rigid Washable Cut to Fit

$23.51

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

$14.35

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12 PACK - MANY SIZES - True Blue Spun Fiberglass Furnace Filter
12 PACK - MANY SIZES - True Blue Spun Fiberglass Furnace Filter

$58.11

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Filtrete 18x20x1 Air Filter MPR 800 MERV 10 Micro Particle Reduction 5 PACK!
Filtrete 18x20x1 Air Filter MPR 800 MERV 10 Micro Particle Reduction 5 PACK!

$47.99

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18x20x1 Inch Standard Pleated Air Filter FPR 5, MERV 8 Moisture Resistant Frame
18x20x1 Inch Standard Pleated Air Filter FPR 5, MERV 8 Moisture Resistant Frame

$6.12

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18x20x1 Air Filter Glasfloss GDS Series Disposable - Box of 6
18x20x1 Air Filter Glasfloss GDS Series Disposable - Box of 6

$40.85

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18"x 20"x 1" 2-Pack AC ,Vent , Furnace Rigid Washable Air Filter
18"x 20"x 1" 2-Pack AC ,Vent , Furnace Rigid Washable Air Filter

$25.11

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(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro de aire Plisados
(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro de aire Plisados

$14.35

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Aerostar 18x20x1 MERV 8 Pleated Air Filter AC Furnace Air Filter 6 Pack Actua...
Aerostar 18x20x1 MERV 8 Pleated Air Filter AC Furnace Air Filter 6 Pack Actua...

$74.35

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(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro de aire Plisados
(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro de aire Plisados

$14.59

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NEW CASE OF (12) USA MADE 18x20x1 AIR FURNACE FILTER HVAC FILTERS NEW 6953806
NEW CASE OF (12) USA MADE 18x20x1 AIR FURNACE FILTER HVAC FILTERS NEW 6953806

$28.99

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(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro de aire Plisados
(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro de aire Plisados

$14.35

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(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro de aire Plisados
(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro de aire Plisados

$14.11

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New 18x20x1 Air Filter Standard Pleated Furnace Ac (3-pack) Best Filtro De Aire
New 18x20x1 Air Filter Standard Pleated Furnace Ac (3-pack) Best Filtro De Aire

$14.35

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True Blue EZ Flow Spun Fiberglass Furnace Filters, Case of 12, All Sizes
True Blue EZ Flow Spun Fiberglass Furnace Filters, Case of 12, All Sizes

$51.79

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18X20X1 Air Filter Standard Pleated FPR 5 Dust & Pollen High Quality (3-Pack)
18X20X1 Air Filter Standard Pleated FPR 5 Dust & Pollen High Quality (3-Pack)

$14.35

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1-Pack Standard Pleated Air Filter 18x20x1, Air Filters Replacement FPR 5 MERV 8
1-Pack Standard Pleated Air Filter 18x20x1, Air Filters Replacement FPR 5 MERV 8

$7.72

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Pleated Air Filters Replacement For Furnace. AC HVAC MERV 8 FPR 5, 3-Pack New
Pleated Air Filters Replacement For Furnace. AC HVAC MERV 8 FPR 5, 3-Pack New

$13.95

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(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro de aire Plisados
(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro de aire Plisados

$16.50

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Air Filter Pleated Standard AC Furnace Filtro de aire Plisados(3-PACK) 18x20x1
Air Filter Pleated Standard AC Furnace Filtro de aire Plisados(3-PACK) 18x20x1

$15.75

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18X20X1 Air Filter Standard Pleated FPR 5 Dust & Pollen High Quality (3-Pack)
18X20X1 Air Filter Standard Pleated FPR 5 Dust & Pollen High Quality (3-Pack)

$14.24

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AAF/FLANDERS Naturalaire Air Filter 18" X 20" X 1" Pleated MERV 8 - 84858011820
AAF/FLANDERS Naturalaire Air Filter 18" X 20" X 1" Pleated MERV 8 - 84858011820

$14.95

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18x20x1 (17_1/2x19_1/2) Pleated MERV 10 Air Filters 2 Pack
18x20x1 (17_1/2x19_1/2) Pleated MERV 10 Air Filters 2 Pack

$32.99

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18x20x1 MERV 10 Pleated Air Filters. 12 PACK. Actual Size: 17-1/2 x 19-1/2 x 7/8
18x20x1 MERV 10 Pleated Air Filters. 12 PACK. Actual Size: 17-1/2 x 19-1/2 x 7/8

$71.97

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Aerostar 18X20X1 MERV 11 AC Furnace Air Filter 6 Pack
Aerostar 18X20X1 MERV 11 AC Furnace Air Filter 6 Pack

$19.99

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18x20x1 (17_1/2x19_1/2) Pleated MERV 12 Air Filters 6 Pack
18x20x1 (17_1/2x19_1/2) Pleated MERV 12 Air Filters 6 Pack

$57.99

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Filterbuy 18x20x1 Pleated Air Filters, Replacement for HVAC AC Furnace (MERV 13)
Filterbuy 18x20x1 Pleated Air Filters, Replacement for HVAC AC Furnace (MERV 13)

$39.80

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Aerostar 18x20x1 MERV 13 Furnace Air Filter, 6 Pack
Aerostar 18x20x1 MERV 13 Furnace Air Filter, 6 Pack

$40.49

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18x20x1 (17_1/2x19_1/2) Pleated MERV 12 Air Filters 2 Pack
18x20x1 (17_1/2x19_1/2) Pleated MERV 12 Air Filters 2 Pack

$33.49

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18x20x1 (17.75 x 19.75) MERV 11 Filter
18x20x1 (17.75 x 19.75) MERV 11 Filter

$29.16

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Air Filter Replacement for AC - Standard Pleated FPR 5 OR FPR 7 - CHOOSE 1 or 4
Air Filter Replacement for AC - Standard Pleated FPR 5 OR FPR 7 - CHOOSE 1 or 4

$9.78

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New 18x20x1 Air Filter Standard Pleated Furnace Ac (3-pack) Best Filtro De Aire
New 18x20x1 Air Filter Standard Pleated Furnace Ac (3-pack) Best Filtro De Aire

$14.35

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18 X 20 X 1 Inches Standard Pleated Air Filter FPR 5 Furnace AC
18 X 20 X 1 Inches Standard Pleated Air Filter FPR 5 Furnace AC

$18.78

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18X20X1 Air Filter Standard Pleated FPR 5 Dust & Pollen High Quality (3-Pack)
18X20X1 Air Filter Standard Pleated FPR 5 Dust & Pollen High Quality (3-Pack)

$14.35

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1" Inch Glasfloss ZL MERV 10 Pleated Air Filters for AC & Furnace. Case of 12
1" Inch Glasfloss ZL MERV 10 Pleated Air Filters for AC & Furnace. Case of 12

$72.65

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True Blue 118201 18x20 x 1 In. Fiberglass Air Filter, 30 Days - Quantity 12
True Blue 118201 18x20 x 1 In. Fiberglass Air Filter, 30 Days - Quantity 12

$48.17

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Simply Filters 18x20x1 MERV 8, MPR 600, AC Furnace HVAC Air Filter
Simply Filters 18x20x1 MERV 8, MPR 600, AC Furnace HVAC Air Filter

$26.60

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Nordic Pure 18x20x1 Pleated MERV 12 AC And Furnace Air Filters 2-Pack
Nordic Pure 18x20x1 Pleated MERV 12 AC And Furnace Air Filters 2-Pack

$33.49

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Flanders NaturalAire 18x20x1 MERV 8 Pack of 11 Pre Pleat Air Filter Furnace HVAC
Flanders NaturalAire 18x20x1 MERV 8 Pack of 11 Pre Pleat Air Filter Furnace HVAC

$14.99

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BOX OF 6 AIRx HEALTH 18x20x1 MERV 13 Pleated Air Conditioner AC Filters!
BOX OF 6 AIRx HEALTH 18x20x1 MERV 13 Pleated Air Conditioner AC Filters!

$49.99

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18x20x1 MERV 8 Pleated Air Filters by Mann+Hummel. 4 Pack.
18x20x1 MERV 8 Pleated Air Filters by Mann+Hummel. 4 Pack.

$32.97

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18x20x1 (17_1/2x19_1/2) Pleated MERV 8 Air Filters 6 Pack
18x20x1 (17_1/2x19_1/2) Pleated MERV 8 Air Filters 6 Pack

$55.49

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Filtrete Air-Filter Basic Pleated Furnace Replacement Pad Dust Pack Lot 3M 6 15
Filtrete Air-Filter Basic Pleated Furnace Replacement Pad Dust Pack Lot 3M 6 15

$13.77

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Aerostar 18 x 20 x 1 MERV 11 Furnace Air Filter, 6 Pack
Aerostar 18 x 20 x 1 MERV 11 Furnace Air Filter, 6 Pack

$13.49

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Aerostar 18x20x1 MERV 8 Pleated Air Filter AC Furnace Air Filter 6 Pack
Aerostar 18x20x1 MERV 8 Pleated Air Filter AC Furnace Air Filter 6 Pack

$21.99

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Simply Filters 18x20x1 MERV 13, MPR 1500, AC Furnace HVAC Air Filter
Simply Filters 18x20x1 MERV 13, MPR 1500, AC Furnace HVAC Air Filter

$39.97

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Accumulair Gold 18x20x1 MERV 8 Air Filter (4 Pack)
Accumulair Gold 18x20x1 MERV 8 Air Filter (4 Pack)

$44.74

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Filterbuy Allergen Odor Eliminator 18x20x1 MERV 8 Pleated AC Furnace Air Filter
Filterbuy Allergen Odor Eliminator 18x20x1 MERV 8 Pleated AC Furnace Air Filter

$52.30

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(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro de aire Plisados
(3-PACK) 18x20x1 Air Filter Standard Pleated Furnace AC Filtro de aire Plisados

$18.99

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PERMANENT WASHABLE ELECTROSTATIC FURNACE AC AIR FILTER Dust Electronic USA
PERMANENT WASHABLE ELECTROSTATIC FURNACE AC AIR FILTER Dust Electronic USA

$49.95

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1 PACK or 4 PACK- Air Filter Allergen Plus Pleated FPR 7 Dust Filters Furnace AC
1 PACK or 4 PACK- Air Filter Allergen Plus Pleated FPR 7 Dust Filters Furnace AC

$18.77

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18x20x1 (17_1/2x19_1/2) Furnace Air Filters MERV 10 Pleated Plus Carbon 3 Pack
18x20x1 (17_1/2x19_1/2) Furnace Air Filters MERV 10 Pleated Plus Carbon 3 Pack

$54.99

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18x20x1 Merv 8 Pleated AC Furnace Filter - Case of 6
18x20x1 Merv 8 Pleated AC Furnace Filter - Case of 6

$47.99

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1" Inch Depth Glasfloss ZL MERV 10 Pleated Air Filters. 3 Pack
1" Inch Depth Glasfloss ZL MERV 10 Pleated Air Filters. 3 Pack

$29.29

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Proairtek AF18201M13SWH Model MERV13 18x20x1 Air Filters (Pack of 2)
Proairtek AF18201M13SWH Model MERV13 18x20x1 Air Filters (Pack of 2)

$19.99

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Filter King 18x20x1 Air Filter 12-PACK MERV 13 Actual Size 18 x 20 x .75"
Filter King 18x20x1 Air Filter 12-PACK MERV 13 Actual Size 18 x 20 x .75"

$160.41

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Filter King 18x20x1 Air Filter 12-PACK MERV 8 Actual Size 17.5 x 19.5 x .75"
Filter King 18x20x1 Air Filter 12-PACK MERV 8 Actual Size 17.5 x 19.5 x .75"

$99.99

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