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20x20 Filter(116)
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Clorox 20x20x1 Air Filter MERV 8 Dust & Lint Defense HVAC Furnace Filters, MPR 600 & FPR 5, 4 Count From $35.99

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From$3599
Clorox 20x20x1 Air Filter MERV 8 Dust & Lint Defense HVAC Furnace Filters, MPR 600 & FPR 5, 4 Count
4.9 out of 5 stars
6 Pack of 20x20x4 MERV 10 Pleated 4" Inch Air Filters by Glasfloss. Actual Size: 19-1/2 x 19-1/2 x 3-3/4 $79.95

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$7995
current price $79.956 Pack of 20x20x4 MERV 10 Pleated 4" Inch Air Filters by Glasfloss. Actual Size: 19-1/2 x 19-1/2 x 3-3/4
5 out of 5 stars
Filterbuy 20x20x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 6-Pack $34.18 Was $37.98 $34.18/in

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Now$3418
current price Now $34.18, Was $37.98$37.98
$34.18/in
Filterbuy 20x20x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 6-Pack
4.7 out of 5 stars
Filterbuy 20x20x1 Air Filter MERV 13 Smoke Defense, Pleated HVAC AC Furnace Filter Replacement, 4-Pack $47.96 $47.96/in

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$4796
current price $47.96$47.96/in
Filterbuy 20x20x1 Air Filter MERV 13 Smoke Defense, Pleated HVAC AC Furnace Filter Replacement, 4-Pack
4.6 out of 5 stars
Overall pick Filtrete 20x20x1 HVAC Furnace Air Filter, MPR 300 MERV 5, Basic Dust and Lint, 1 Filter From $5.64
Overall pick

3 options
Available in additional 3 optionsFrom$564
Filtrete 20x20x1 HVAC Furnace Air Filter, MPR 300 MERV 5, Basic Dust and Lint, 1 Filter
4.6 out of 5 stars
4K+ bought in past month Filtrete 20x20x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 1 Filter From $12.27
4K+ bought in past month

4 options
Available in additional 4 optionsFrom$1227
Filtrete 20x20x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 1 Filter
4.6 out of 5 stars
4K+ bought in past month Filtrete 20x20x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergens & Pet Dander, 2 Pack From $13.88
4K+ bought in past month

4 options
Available in additional 4 optionsFrom$1388
Filtrete 20x20x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergens & Pet Dander, 2 Pack
4.7 out of 5 stars
10K+ bought in past month AAF Flanders 20" x 25" x 1" Nested Glass MERV 1 Air Filter (4 Filters) From $7.48
10K+ bought in past month

9 options
Available in additional 9 optionsFrom$748
AAF Flanders 20" x 25" x 1" Nested Glass MERV 1 Air Filter (4 Filters)
4.5 out of 5 stars
100+ bought in past month Simply Filters 20x20x1 MERV 8, MPR 600, AC Furnace HVAC Air Filter (4 Pack) From $29.97
100+ bought in past month

2 options
Available in additional 2 optionsFrom$2997
Simply Filters 20x20x1 MERV 8, MPR 600, AC Furnace HVAC Air Filter (4 Pack)
4.6 out of 5 stars
SUIXINEYI MERV 13 Pleated HVAC Furnace Air Filter 20x20x1 With Non-Woven Fabric Design for Home,4 Packs $49.99

$4999
current price $49.99SUIXINEYI MERV 13 Pleated HVAC Furnace Air Filter 20x20x1 With Non-Woven Fabric Design for Home,4 Packs
5 out of 5 stars
Filterbuy 20x20x1 Air Filter MERV 11 Allergy Defense, Pleated HVAC AC Furnace Filter Replacement, 4-Pack $39.96

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$3996
current price $39.96Filterbuy 20x20x1 Air Filter MERV 11 Allergy Defense, Pleated HVAC AC Furnace Filter Replacement, 4-Pack
4.6 out of 5 stars
Filterbuy 20x20x1 Air Filter MERV 11 Allergy Defense, Pleated HVAC AC Furnace Filter Replacement, 6-Pack $47.94

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$4794
current price $47.94Filterbuy 20x20x1 Air Filter MERV 11 Allergy Defense, Pleated HVAC AC Furnace Filter Replacement, 6-Pack
4.6 out of 5 stars
Aerostar 20x20x1 MERV 8 Air Filter, Pleated AC Furnace HVAC, Dust Pollen Pet Dander, 4 Pack $29.28 $7.32/count

$2928
current price $29.28$7.32/count
Aerostar 20x20x1 MERV 8 Air Filter, Pleated AC Furnace HVAC, Dust Pollen Pet Dander, 4 Pack
4.6 out of 5 stars
Simply Filters 20x20x1 MERV 8, MPR 600, AC Furnace HVAC Air Filter (2 Pack) From $24.99

3 options
Available in additional 3 optionsFrom$2499
Simply Filters 20x20x1 MERV 8, MPR 600, AC Furnace HVAC Air Filter (2 Pack)
4.6 out of 5 stars
Clorox 20x20x1 Air Filter MERV 8 Dust & Lint Defense HVAC Furnace Filters, MPR 600 & FPR 5, 4 Count From $35.99

4 options
Available in additional 4 optionsFrom$3599
Clorox 20x20x1 Air Filter MERV 8 Dust & Lint Defense HVAC Furnace Filters, MPR 600 & FPR 5, 4 Count
4.9 out of 5 stars
20x20x1 MERV 8 Pleated AC Furnace Air Filters. 6 Pack $36.95

$3695
current price $36.9520x20x1 MERV 8 Pleated AC Furnace Air Filters. 6 Pack
4.7 out of 5 stars
AquaNation 20X20x1 MERV 4 Polyester Fiberglass AC Furnace Air Filters, Disposable Throwaway Panel Filters, Clean Living Basic Dust (Lot of 12) $106.99

$10699
current price $106.99AquaNation 20X20x1 MERV 4 Polyester Fiberglass AC Furnace Air Filters, Disposable Throwaway Panel Filters, Clean Living Basic Dust (Lot of 12)
20x20x1 (19_1/2x19_1/2) Pleated MERV 8 Air Filters 4 Pack From $39.49

5 options
Available in additional 5 optionsFrom$3949
20x20x1 (19_1/2x19_1/2) Pleated MERV 8 Air Filters 4 Pack
5 out of 5 stars
True Blue 20" X 20" X 1" Furnace Air Filter $55.14

$5514
current price $55.14True Blue 20" X 20" X 1" Furnace Air Filter
1 out of 5 stars
AMI PARTS 20x20x1 Furnace Air Filter MERV8 (MPR 600) Dust Reduction, Pleated HVAC AC Air Filters, 4 Filters $29.99

$2999
current price $29.99AMI PARTS 20x20x1 Furnace Air Filter MERV8 (MPR 600) Dust Reduction, Pleated HVAC AC Air Filters, 4 Filters
4.4 out of 5 stars
Filterbuy 20x20x1 Air Filter MERV 11 Allergy Defense, Pleated HVAC AC Furnace Filter Replacement, 12-Pack $89.88

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$8988
current price $89.88Filterbuy 20x20x1 Air Filter MERV 11 Allergy Defense, Pleated HVAC AC Furnace Filter Replacement, 12-Pack
4.6 out of 5 stars
Filterbuy 20x20x1 Air Filter MERV 13 Smoke Defense, Pleated HVAC AC Furnace Filter Replacement, 6-Pack $57.96 $57.96/in

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$5796
current price $57.96$57.96/in
Filterbuy 20x20x1 Air Filter MERV 13 Smoke Defense, Pleated HVAC AC Furnace Filter Replacement, 6-Pack
4.6 out of 5 stars
LotFancy 20x20x1 Air Filters, MERV 8 Pleated HVAC AC Furnace Filters, MPR 600 & FPR 5, 6 Pack From $36.99

3 options
Available in additional 3 optionsFrom$3699
LotFancy 20x20x1 Air Filters, MERV 8 Pleated HVAC AC Furnace Filters, MPR 600 & FPR 5, 6 Pack
4.4 out of 5 stars
20x20x1 Air Filter MERV 8 (2-Pack) - Pleated Air Conditioner HVAC AC Furnace Air Filters Replacement (20x20x1 2-Pack) $24.99

$2499
current price $24.9920x20x1 Air Filter MERV 8 (2-Pack) - Pleated Air Conditioner HVAC AC Furnace Air Filters Replacement (20x20x1 2-Pack)
3.8 out of 5 stars
1K+ bought in past month Filterbuy 20x20x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 4-Pack $29.96
1K+ bought in past month

$2996
current price $29.96Filterbuy 20x20x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 4-Pack
4.7 out of 5 stars
20x20x1 Air Filter MERV 8 (4-Pack) - Pleated Air Conditioner HVAC AC Furnace Air Filters Replacement (20x20x1 4-Pack) $36.99

$3699
current price $36.9920x20x1 Air Filter MERV 8 (4-Pack) - Pleated Air Conditioner HVAC AC Furnace Air Filters Replacement (20x20x1 4-Pack)
Filterbuy 20x20x1 Air Filter MERV 11 Allergy Defense, Pleated HVAC AC Furnace Filter Replacement, 4-Pack $39.96

$3996
current price $39.96Filterbuy 20x20x1 Air Filter MERV 11 Allergy Defense, Pleated HVAC AC Furnace Filter Replacement, 4-Pack
4.6 out of 5 stars
Best seller Filtrete 20x20x1 HVAC Furnace Air Filter, MPR 700 MERV 8, Dust, Pollen & Pet Dander Reduction, 6 Pack From $52.99
Best seller

2 options
Available in additional 2 optionsFrom$5299
Filtrete 20x20x1 HVAC Furnace Air Filter, MPR 700 MERV 8, Dust, Pollen & Pet Dander Reduction, 6 Pack
4.7 out of 5 stars
Filterbuy 20x20x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 1-Pack $23.99 $23.99/in

$2399
current price $23.99$23.99/in
Filterbuy 20x20x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 1-Pack
4.7 out of 5 stars
20 in. x 20 in. x 1 in. Allergen Plus Pleated Furnace Air Filter FPR 7, MERV 11 (2-Pack) $22.99

$2299
current price $22.9920 in. x 20 in. x 1 in. Allergen Plus Pleated Furnace Air Filter FPR 7, MERV 11 (2-Pack)
4.3 out of 5 stars
Filterbuy 20x20x1 Air Filter MERV 13 Smoke Defense, Pleated HVAC AC Furnace Filter Replacement, 12-Pack $104.88

Sponsored
$10488
current price $104.88Filterbuy 20x20x1 Air Filter MERV 13 Smoke Defense, Pleated HVAC AC Furnace Filter Replacement, 12-Pack
4.6 out of 5 stars
20x20x2 MERV 13 (MPR 2200) AC Furnace 2" Inch Air Filters by Glasfloss Industries. 12 Pack $132.95

Sponsored
$13295
current price $132.9520x20x2 MERV 13 (MPR 2200) AC Furnace 2" Inch Air Filters by Glasfloss Industries. 12 Pack
4.2 out of 5 stars
Filter King 20x20x1 Air Filter | 6-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 19.5 x 19.5 x .75" $39.90

$3990
current price $39.90Filter King 20x20x1 Air Filter | 6-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 19.5 x 19.5 x .75"
4.8 out of 5 stars
Honeywell 20x20x1 MERV 12 Pleated HVAC Furnace Air Filter -4 Pack $57.65 $57.65/ca

$5765
current price $57.65$57.65/ca
Honeywell 20x20x1 MERV 12 Pleated HVAC Furnace Air Filter -4 Pack
4.4 out of 5 stars
Filter King 20x20x1 Air Filter | 4-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 19.5 x 19.5 x .75" $29.36

$2936
current price $29.36Filter King 20x20x1 Air Filter | 4-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 19.5 x 19.5 x .75"
4.8 out of 5 stars
SUIXINEYI AC Filters 20X20X1 Furnace Air Filter, Pleated HVAC Air Filter MERV 11 MPR 1000, Allergen Defense,4 Filters $42.99

$4299
current price $42.99SUIXINEYI AC Filters 20X20X1 Furnace Air Filter, Pleated HVAC Air Filter MERV 11 MPR 1000, Allergen Defense,4 Filters
HHI 20x20x1 Air Filter 6 Pack MERV 8 Pleated HVAC AC Furnace Filters | 450GSM Rigid Frame, Captures Dust, Lint & Pollen (Actual Size 19.75 x 19.75 x 0.75 Inches) $34.99

$3499
current price $34.99HHI 20x20x1 Air Filter 6 Pack MERV 8 Pleated HVAC AC Furnace Filters | 450GSM Rigid Frame, Captures Dust, Lint & Pollen (Actual Size 19.75 x 19.75 x 0.75 Inches)
AMI PARTS 20x20x1 Pleated Air Filter MERV11 HVAC Furnace Air Condition Filter ,Dust Lint Control,4 Filters $51.29

$5129
current price $51.29AMI PARTS 20x20x1 Pleated Air Filter MERV11 HVAC Furnace Air Condition Filter ,Dust Lint Control,4 Filters
Filterbuy 20x20x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 5-Pack $33.95

$3395
current price $33.95Filterbuy 20x20x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 5-Pack
4.7 out of 5 stars
AIRx Filters 20x20x1 Air Filter MERV 11 Pleated HVAC AC Furnace Air Filter, Allergy 4-Pack, Made in the USA $37.20

$3720
current price $37.20AIRx Filters 20x20x1 Air Filter MERV 11 Pleated HVAC AC Furnace Air Filter, Allergy 4-Pack, Made in the USA
Filter King 20x20x0.5 Air Filter | 4-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 19.5 x 19.5 x 0.5" $91.84

$9184
current price $91.84Filter King 20x20x0.5 Air Filter | 4-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 19.5 x 19.5 x 0.5"
5 out of 5 stars
Filterbuy 20x20x1 Air Filter MERV 10 Odor Defense, Pleated HVAC AC Furnace Filter Replacement, 1-Pack $43.99

$4399
current price $43.99Filterbuy 20x20x1 Air Filter MERV 10 Odor Defense, Pleated HVAC AC Furnace Filter Replacement, 1-Pack
3 out of 5 stars
Filtrete 20x20x1, AC Furnace Air Filter, MPR 1500, Healthy Living Ultra Allergen, 4-Pack From $47.68

8 options
Available in additional 8 optionsFrom$4768
Filtrete 20x20x1, AC Furnace Air Filter, MPR 1500, Healthy Living Ultra Allergen, 4-Pack
3.2 out of 5 stars
Filter King 20x20x1 Air Filter | 6-PACK | MERV 13 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 19.5 x 19.5 x .75" $54.96

$5496
current price $54.96Filter King 20x20x1 Air Filter | 6-PACK | MERV 13 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 19.5 x 19.5 x .75"
4.8 out of 5 stars
Box Fan Air Filter 20x20x1 MERV 13 – Pack of 3 From $59.99

4 options
Available in additional 4 optionsFrom$5999
Box Fan Air Filter 20x20x1 MERV 13 – Pack of 3
ECO POWER 20x20x1 Air Filter 4 Pack Pleated AC & Furnace Replacement Filter $41.61

$4161
current price $41.61ECO POWER 20x20x1 Air Filter 4 Pack Pleated AC & Furnace Replacement Filter
Dupont Odor & Pollen Air Filter 20x20 $5.88

$588
current price $5.88Dupont Odor & Pollen Air Filter 20x20
Filtrete 20x20x1 Air Filter, MPR 1500 MERV 12, Advanced Allergen Reduction, 2 Filters From $29.28

2 options
Available in additional 2 optionsFrom$2928
Filtrete 20x20x1 Air Filter, MPR 1500 MERV 12, Advanced Allergen Reduction, 2 Filters
4.8 out of 5 stars
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