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Simply Filters 18x18x1 MERV 8, MPR 600, AC Furnace HVAC Air Filter (6 Pack) From $24.60

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Simply Filters 18x18x1 MERV 8, MPR 600, AC Furnace HVAC Air Filter (6 Pack)
64.8 out of 5 Stars. 6 reviews
6 Pack of 18x18x1 MERV 10 Pleated Air Filters by Glasfloss. Actual Size: 17-1/2 x 17-1/2 x 7/8 $41.95

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$4195
current price $41.956 Pack of 18x18x1 MERV 10 Pleated Air Filters by Glasfloss. Actual Size: 17-1/2 x 17-1/2 x 7/8
104.8 out of 5 Stars. 10 reviews
Filterbuy 18x18x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 5-Pack $39.95

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current price $39.95Filterbuy 18x18x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 5-Pack
134.7 out of 5 Stars. 13 reviews
Simply Filters 14x18x1 MERV 8, MPR 600, AC Furnace HVAC Air Filter (6 Pack) From $22.58

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Simply Filters 14x18x1 MERV 8, MPR 600, AC Furnace HVAC Air Filter (6 Pack)
35 out of 5 Stars. 3 reviews
50+ bought since yesterday Filtrete 18x18x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter $5.64

$564
current price $5.64Filtrete 18x18x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter
2954.5 out of 5 Stars. 295 reviews
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AAF 118181 Air Filter, 18 in L x 18 in W x 1 in T $44.39

$4439
current price $44.39AAF 118181 Air Filter, 18 in L x 18 in W x 1 in T
True Blue 118181 Furnace Air Filter, 18" x 18" x 1" $49.84

$4984
current price $49.84True Blue 118181 Furnace Air Filter, 18" x 18" x 1"
11 out of 5 Stars. 1 reviews
18 in. x 18 in. x 1 in. Allergen Plus Pleated Air Filter FPR 7, MERV 11 (2-Pack) $25.70

$2570
current price $25.7018 in. x 18 in. x 1 in. Allergen Plus Pleated Air Filter FPR 7, MERV 11 (2-Pack)
25 out of 5 Stars. 2 reviews
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True Blue 118181 Furnace Air Filter 18 x 18 x 1

True Blue 118181 Furnace Air Filter 18 x 18 x 1
15 out of 5 Stars. 1 reviews
Aerostar 18x18x1 MERV 8 Pleated Air Filter, AC Furnace Air Filter, 6 Pack $39.96 $6.66/count

$3996
current price $39.96$6.66/count
Aerostar 18x18x1 MERV 8 Pleated Air Filter, AC Furnace Air Filter, 6 Pack
494.8 out of 5 Stars. 49 reviews
Simply Filters 14x18x1 MERV 13, MPR 1500, AC Furnace HVAC Air Filter (2 Pack) From $32.07

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Simply Filters 14x18x1 MERV 13, MPR 1500, AC Furnace HVAC Air Filter (2 Pack)
34.3 out of 5 Stars. 3 reviews
Filter King 16x18x1 Air Filter | 4-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 16 x 18 x .75" $39.88

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current price $39.88Filter King 16x18x1 Air Filter | 4-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 16 x 18 x .75"
144.8 out of 5 Stars. 14 reviews
Do it Best 18 In. x 18 In. x 1 In. MERV 11 Furnace Filter Pack of 6 $76.08

$7608
current price $76.08Do it Best 18 In. x 18 In. x 1 In. MERV 11 Furnace Filter Pack of 6
Precisionaire Furnace Air Filter 18 " X 18 " X 1 " Fiberglass $43.15

$4315
current price $43.15Precisionaire Furnace Air Filter 18 " X 18 " X 1 " Fiberglass
Furnace Filter 18" x 18" x 1" Pleated Disposable $22.81

$2281
current price $22.81Furnace Filter 18" x 18" x 1" Pleated Disposable
18x18x1 Air Filter MERV 8 Rating, 12 Pack of Furnace Filters Comparable to MPR 700 & FPR 5 - Made in USA by AIRX FILTERS WICKED CLEAN AIR. $84.82

$8482
current price $84.8218x18x1 Air Filter MERV 8 Rating, 12 Pack of Furnace Filters Comparable to MPR 700 & FPR 5 - Made in USA by AIRX FILTERS WICKED CLEAN AIR.
Do it Best 18 In. x 18 In. x 1 In. MERV 8 Furnace Filter (12-Pack) 412245 $48.95 Was $63.05

Now$4895
current price Now $48.95, Was $63.05$63.05
Do it Best 18 In. x 18 In. x 1 In. MERV 8 Furnace Filter (12-Pack) 412245
18x18x1 Air Filter MERV 11 Pleated HVAC Furnace Air Filter, Allergy 6-Pack, Made in the USA $47.99

$4799
current price $47.9918x18x1 Air Filter MERV 11 Pleated HVAC Furnace Air Filter, Allergy 6-Pack, Made in the USA
18x18x1 Air Filter MERV 13 Rating, 12 Pack of Furnace Filters Comparable to MPR 1500 - 2200 & FPR 9 - Made in USA by AIRX FILTERS WICKED CLEAN AIR. $114.31

$11431
current price $114.3118x18x1 Air Filter MERV 13 Rating, 12 Pack of Furnace Filters Comparable to MPR 1500 - 2200 & FPR 9 - Made in USA by AIRX FILTERS WICKED CLEAN AIR.
18x18x1 Air Filter MERV 11 Rating, 12 Pack of Furnace Filters Comparable to MPR 1000, MPR 1200 & FPR 7 - Made in USA by AIRX FILTERS WICKED CLEAN AIR. $85.10

$8510
current price $85.1018x18x1 Air Filter MERV 11 Rating, 12 Pack of Furnace Filters Comparable to MPR 1000, MPR 1200 & FPR 7 - Made in USA by AIRX FILTERS WICKED CLEAN AIR.
Filterbuy 18x18x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 3-Pack $33.99

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current price $33.99Filterbuy 18x18x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 3-Pack
175 out of 5 Stars. 17 reviews
Filterbuy 18x18x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 12-Pack $89.88

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current price $89.88Filterbuy 18x18x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 12-Pack
184.9 out of 5 Stars. 18 reviews
Best Air B1-1818-8-12 18" x 18" x 1" Pleated Furnace Air Filter 90 Days - Quantity of 12 $94.83

$9483
current price $94.83Best Air B1-1818-8-12 18" x 18" x 1" Pleated Furnace Air Filter 90 Days - Quantity of 12
Glasfloss ZLP14181 Z-Line Pleated Filter MERV 10 40% Eff - 14 in. X 18 in. X 1 - 0.3 Lbs $29.47

$2947
current price $29.47Glasfloss ZLP14181 Z-Line Pleated Filter MERV 10 40% Eff - 14 in. X 18 in. X 1 - 0.3 Lbs
Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 4 Pack $53.96 $13.49/ea

$5396
current price $53.96$13.49/ea
Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 4 Pack
5224.7 out of 5 Stars. 522 reviews
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18x18x1 Air Filter MERV 8 Comparable to MPR 700 & FPR 5 Electrostatic Pleated Air Conditioner Filter 6 Pack HVAC AC Premium USA Made 18x18x1 Furnace Filters by AIRX FILTERS WICKED CLEAN AIR. $51.46

$5146
current price $51.4618x18x1 Air Filter MERV 8 Comparable to MPR 700 & FPR 5 Electrostatic Pleated Air Conditioner Filter 6 Pack HVAC AC Premium USA Made 18x18x1 Furnace Filters by AIRX FILTERS WICKED CLEAN AIR.
14 in. x 18 in. x 1 in. Allergen Plus Pleated Air Filter FPR-7, MERV-11 (2-Pack) $21.99

$2199
current price $21.9914 in. x 18 in. x 1 in. Allergen Plus Pleated Air Filter FPR-7, MERV-11 (2-Pack)
34.3 out of 5 Stars. 3 reviews
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True Blue 14 In. x 18 In. x 1 In. Merv 2 Fiberglass Furnace Filter Pack of 12

True Blue 14 In. x 18 In. x 1 In. Merv 2 Fiberglass Furnace Filter Pack of 12
14 out of 5 Stars. 1 reviews
PureFlow, Home Furnace Air Filter 18x18x1, with 4 Layers of Advanced Filtration Technology, MERV-13 Pack-of-2 From $32.82

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Available in additional 21 optionsFrom$3282
PureFlow, Home Furnace Air Filter 18x18x1, with 4 Layers of Advanced Filtration Technology, MERV-13 Pack-of-2
594.1 out of 5 Stars. 59 reviews
3M Filtrete 317-4 18" x 18" x 1" Gray Basic 300 Dust & Lint Reduction Pleated Air Filter 90 Day Filter - Quantity of 4

3M Filtrete 317-4 18" x 18" x 1" Gray Basic 300 Dust & Lint Reduction Pleated Air Filter 90 Day Filter - Quantity of 4
Simply Filters 13x18x1 MERV 11, MPR 1000, AC Furnace HVAC Air Filter (6 Pack) From $33.17

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Simply Filters 13x18x1 MERV 11, MPR 1000, AC Furnace HVAC Air Filter (6 Pack)
Filterbuy 18x18x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 6-Pack $39.96 Was $58.42

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current price Now $39.96, Was $58.42$58.42
Filterbuy 18x18x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 6-Pack
284.8 out of 5 Stars. 28 reviews
True Blue 118181 18" x 18" x 1" Flat Panel Spun Fiberglass Disposable Furnace Air Filter MERV 2 - Quantity of 12

True Blue 118181 18" x 18" x 1" Flat Panel Spun Fiberglass Disposable Furnace Air Filter MERV 2 - Quantity of 12
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Best seller Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 1 Filter From $11.88

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Available in additional 3 optionsFrom$1188
Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 1 Filter
3884.3 out of 5 Stars. 388 reviews
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Best seller Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter $18.47

$1847
current price $18.47Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter
5754.8 out of 5 Stars. 575 reviews
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Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 1 Filter $13.49

$1349
current price $13.49Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 1 Filter
5294.7 out of 5 Stars. 529 reviews
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Filtrete 18x18x1 Air Filter, MPR 1500 MERV 12, Advanced Allergen Reduction, 1 New Filter

Filtrete 18x18x1 Air Filter, MPR 1500 MERV 12, Advanced Allergen Reduction, 1 New Filter
5554.8 out of 5 Stars. 555 reviews
18x18x1 (17_3/4x17_3/4) Furnace Air Filters MERV 10 Pleated Plus Carbon 4 Pack From $53.99

5 options
Available in additional 5 optionsFrom$5399
18x18x1 (17_3/4x17_3/4) Furnace Air Filters MERV 10 Pleated Plus Carbon 4 Pack
18x18x1 (17_3/4x17_3/4) Pure Carbon Odor Reduction Furnace Air Filters 6 Pack From $53.99

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Available in additional 3 optionsFrom$5399
18x18x1 (17_3/4x17_3/4) Pure Carbon Odor Reduction Furnace Air Filters 6 Pack
14 out of 5 Stars. 1 reviews
Aerostar 18x18x1 MERV 6 Pleated Air Filter, AC Furnace Air Filter, 6 Pack From $32.99

2 options
Available in additional 2 optionsFrom$3299
Aerostar 18x18x1 MERV 6 Pleated Air Filter, AC Furnace Air Filter, 6 Pack
644.7 out of 5 Stars. 64 reviews
18x18x1 Air Filter Glasfloss GDS Series Disposable - Case of 12 $80.00

$8000
current price $80.0018x18x1 Air Filter Glasfloss GDS Series Disposable - Case of 12
Proairtek AF18181M08SWH Model 18x18x1 Air Filter, MERV 8; Ideal for Anyone Wanting Clean, Crisp Air in Their Home $19.99

$1999
current price $19.99Proairtek AF18181M08SWH Model 18x18x1 Air Filter, MERV 8; Ideal for Anyone Wanting Clean, Crisp Air in Their Home
18x18x1 (17_3/4x17_3/4) Pleated Air Filters MERV 13 Plus Carbon 4 Pack From $57.99

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Available in additional 5 optionsFrom$5799
18x18x1 (17_3/4x17_3/4) Pleated Air Filters MERV 13 Plus Carbon 4 Pack
SpiroPure 18X18X1 MERV 11 Pleated Air Filters - Made in USA (6 Pack) From $47.44

3 options
Available in additional 3 optionsFrom$4744
SpiroPure 18X18X1 MERV 11 Pleated Air Filters - Made in USA (6 Pack)
15 out of 5 Stars. 1 reviews
Rollback Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria, Virus, 4 Pack $46.88 Was $56.86 $11.72/ea

Now$4688
current price Now $46.88, Was $56.86$56.86
$11.72/ea
Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria, Virus, 4 Pack
5244.8 out of 5 Stars. 524 reviews
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Glasfloss 18X18X1 PREPLEAT #40 ZLP18181 12/CS $35.00

$3500
current price $35.00Glasfloss 18X18X1 PREPLEAT #40 ZLP18181 12/CS
11 out of 5 Stars. 1 reviews
18x18x1 (17_3/4x17_3/4) Pleated MERV 12 Air Filters 6 Pack From $41.99

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Available in additional 5 optionsFrom$4199
18x18x1 (17_3/4x17_3/4) Pleated MERV 12 Air Filters 6 Pack
15 out of 5 Stars. 1 reviews
Best seller Filtrete 14x18x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 1 Filter From $11.88

2 options
Available in additional 2 optionsFrom$1188
Filtrete 14x18x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 1 Filter
5054.5 out of 5 Stars. 505 reviews
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Clorox 18x18x1 Air Filter MERV 13 Virus & Bacteria Defense HVAC Furnace Filters, MPR 1900-2200 & FPR 9-10, 4 Count From $34.99

3 options
Available in additional 3 optionsFrom$3499
Clorox 18x18x1 Air Filter MERV 13 Virus & Bacteria Defense HVAC Furnace Filters, MPR 1900-2200 & FPR 9-10, 4 Count
45 out of 5 Stars. 4 reviews
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