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

$33.86

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

$45.19

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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

$67.69

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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

$14.09

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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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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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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

$12.08

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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

$13.35

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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

$12.79

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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

$13.23

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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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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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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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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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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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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

$13.21

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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

$14.35

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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

$14.09

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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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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

$14.29

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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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(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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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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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

$12.88

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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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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

$35.00

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

$57.81

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

$57.37

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

$12.08

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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

$35.99

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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

$84.07

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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

$13.90

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

$14.39

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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

$9.65

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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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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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Filter King 18x20x1 Air Filter 12-PACK MERV 13 Actual Size 17.5 x 19.5 x .75"
Filter King 18x20x1 Air Filter 12-PACK MERV 13 Actual Size 17.5 x 19.5 x .75"

$160.41

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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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(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

$14.96

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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

$13.99

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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

$7.35

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BNX TruFilter 18x20x1 Air Filter MERV 13 (4-Pack) - MADE IN USA - Electrostat...
BNX TruFilter 18x20x1 Air Filter MERV 13 (4-Pack) - MADE IN USA - Electrostat...

$59.26

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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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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

$14.94

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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

$7.02

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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

$7.02

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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

$17.76

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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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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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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

$33.50

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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

$47.57

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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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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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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

$13.49

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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

$14.44

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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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(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

$16.88

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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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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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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)

$14.44

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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 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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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

$18.79

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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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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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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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(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

$14.29

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

$16.59

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FILTRETE BASIC WHITE FLAT PANEL AIR FURNACE FILTER COUNT OF 8, 16, 24, 48 NEW
FILTRETE BASIC WHITE FLAT PANEL AIR FURNACE FILTER COUNT OF 8, 16, 24, 48 NEW

$34.99

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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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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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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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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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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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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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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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(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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(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.

$16.95

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

$26.99

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NEW 4 Pack, Aerostar 18x20x1 MERV 11 Furnace Air Filter, 4 Pack
NEW 4 Pack, Aerostar 18x20x1 MERV 11 Furnace Air Filter, 4 Pack

$11.99

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Aerostar 18x20x1 AC and Furnace Air Filter MERV 8, Box of 6
Aerostar 18x20x1 AC and Furnace Air Filter MERV 8, Box of 6

$40.99

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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" Depth Inch Glasfloss ZL MERV 13 / FPR 10 Pleated HVAC Air Filters. 6 Pack
1" Depth Inch Glasfloss ZL MERV 13 / FPR 10 Pleated HVAC Air Filters. 6 Pack

$57.63

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18x20x1 (17_1/2x19_1/2) Pleated MERV 7 Air Filters 2 Pack
18x20x1 (17_1/2x19_1/2) Pleated MERV 7 Air Filters 2 Pack

$31.99

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Electrostatic Filter for Home Furnaces - Washable - Merv 8
Electrostatic Filter for Home Furnaces - Washable - Merv 8

$39.95

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(12) Orange / White MERV 8 Polyester Air Filter Pads Tackified CHOOSE SIZE
(12) Orange / White MERV 8 Polyester Air Filter Pads Tackified CHOOSE SIZE

$68.88

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(12 Pack) Blue / White Polyester Air Filter Pads - CHOOSE SIZE
(12 Pack) Blue / White Polyester Air Filter Pads - CHOOSE SIZE

$61.95

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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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AIRX HEALTH 18x20x1 MERV 13 Pleated Air Conditioner Furnace Filters 6 Pack NEW
AIRX HEALTH 18x20x1 MERV 13 Pleated Air Conditioner Furnace Filters 6 Pack NEW

$43.99

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18 x 20 x 1 in. Merv 8 Permanent Washable Electrostatic Flexible Air Dust Filter
18 x 20 x 1 in. Merv 8 Permanent Washable Electrostatic Flexible Air Dust Filter

$43.41

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18x20x1 (17_1/2x19_1/2) Pleated MERV 13 Air Filters 3 Pack
18x20x1 (17_1/2x19_1/2) Pleated MERV 13 Air Filters 3 Pack

$43.99

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18x20x1 Air Filter Glasfloss GDS Series Disposable - Box of 12
18x20x1 Air Filter Glasfloss GDS Series Disposable - Box of 12

$64.91

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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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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")

$102.68

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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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