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Shop All Furnace Air Filters20x20x1 Air Filters20x25x1 Air Filters16x20x1 Air Filters16x25x1 Air Filters12x12x1 Air Filters12x24x1 Air Filters14x20x1 Air Filters14x24x1 Air Filters14x25x1 Air Filters18x20x1 Air Filters20x30x1 Air Filters24x24x1 Air FiltersAllergen Air FiltersFiltrete Air FiltersFilterBuy Air FIltersFlanders Air FIltersMERV Rating: 5 to 8MERV Rating: 9 to 12MERV Rating: 13 to 16

Allergen Air Filters in Furnace Air Filters

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Simply Filters 12x12x1 MERV 8, MPR 600, AC Furnace HVAC Air Filter (6 Pack) $23.97 Was $32.97

Simply Filters 12x12x1 MERV 8, MPR 600, AC Furnace HVAC Air Filter (6 Pack)
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Simply Filters 12x12x1 MERV 8, MPR 600, AC Furnace HVAC Air Filter (6 Pack)

5 out of 5 Stars. 2 reviews
Free shipping, arrives in 3+ days

PuroAir Mega Filter - MERV 13 14x25x1 Air Filters with Carbon (2 pack) $49.99

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PuroAir Mega Filter - MERV 13 14x25x1 Air Filters with Carbon (2 pack)

3.8 out of 5 Stars. 8 reviews
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Nordic Pure 20x25x2 Pleated MERV 12 Air Filters 3 Pack $37.99

Nordic Pure 20x25x2 Pleated MERV 12 Air Filters 3 Pack
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Nordic Pure 20x25x2 Pleated MERV 12 Air Filters 3 Pack

4.4 out of 5 Stars. 17 reviews
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20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 12 Air Filter 1 Pack $37.99

20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 12 Air Filter 1 Pack
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20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 12 Air Filter 1 Pack

4.7 out of 5 Stars. 24 reviews
Free shipping, arrives in 3+ days

12 Pack of 14x24x1 MERV 10 Pleated Air Filters by Glasfloss. Actual Size: 13-1/2 x 23-1/2 x 7/8 $79.95

12 Pack of 14x24x1 MERV 10 Pleated Air Filters by Glasfloss. Actual Size: 13-1/2 x 23-1/2 x 7/8
current price $79.95

12 Pack of 14x24x1 MERV 10 Pleated Air Filters by Glasfloss. Actual Size: 13-1/2 x 23-1/2 x 7/8

4.8 out of 5 Stars. 6 reviews
Free shipping, arrives in 3+ days

Filterbuy 16x25x1 MERV 8 Dust Defense, Pleated HVAC AC Furnace Air Filters (3-Pack) $29.97

Filterbuy 16x25x1 MERV 8 Dust Defense, Pleated HVAC AC Furnace Air Filters (3-Pack)
current price $29.97

Filterbuy 16x25x1 MERV 8 Dust Defense, Pleated HVAC AC Furnace Air Filters (3-Pack)

4.7 out of 5 Stars. 90 reviews
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Best seller Filtrete 16x16x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter $5.64

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current price $5.64

Filtrete 16x16x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter

4.4 out of 5 Stars. 143 reviews
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Best seller Filtrete 25x25x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 4 Pack $39.76 $9.94/ea

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Available in additional 2 options
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Filtrete 25x25x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 4 Pack

3.9 out of 5 Stars. 205 reviews
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Filtrete by 3M, 14x25x1, Elite Allergen Reduction HVAC Furnace Air Filter, 2200 MPR, 1 Filter $25.00

Filtrete by 3M, 14x25x1, Elite Allergen Reduction HVAC Furnace Air Filter, 2200 MPR, 1 Filter
Available in additional 5 sizes
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current price $25.00
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Filtrete by 3M, 14x25x1, Elite Allergen Reduction HVAC Furnace Air Filter, 2200 MPR, 1 Filter

4.6 out of 5 Stars. 311 reviews
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Filterbuy 20x20x1 MERV 8 Odor Eliminator, Pleated HVAC AC Furnace Air Filters (1-Pack) $43.99

Filterbuy 20x20x1 MERV 8 Odor Eliminator, Pleated HVAC AC Furnace Air Filters (1-Pack)
current price $43.99

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3 out of 5 Stars. 2 reviews
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2 Pack of 16x20x4 MERV 10 Pleated 4" Inch Air Filters by Glasfloss. Actual Size: 15-1/2 x 19-1/2 x 3-3/4 $39.95

2 Pack of 16x20x4 MERV 10 Pleated 4" Inch Air Filters by Glasfloss. Actual Size: 15-1/2 x 19-1/2 x 3-3/4
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4.5 out of 5 Stars. 33 reviews
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2 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 $39.95 Was $49.53

2 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
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2 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

4.6 out of 5 Stars. 71 reviews
Free shipping, arrives in 3+ days

Filtrete 12x24x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria, Virus, 6 Pack $61.68 $61.68/ca

Filtrete 12x24x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria, Virus, 6 Pack
current price $61.68
$61.68/ca

Filtrete 12x24x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria, Virus, 6 Pack

5 out of 5 Stars. 4 reviews
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Free shipping, arrives Sun, Feb 8

Filtrete 14x14x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 2 Pack $23.98

Filtrete 14x14x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 2 Pack
Available in additional 5 sizes
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Filtrete 14x14x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 2 Pack

4.7 out of 5 Stars. 512 reviews
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Filterbuy 14x24x1 MERV 8 Dust Defense, Pleated HVAC AC Furnace Air Filters (3-Pack) $30.99

Filterbuy 14x24x1 MERV 8 Dust Defense, Pleated HVAC AC Furnace Air Filters (3-Pack)
current price $30.99

Filterbuy 14x24x1 MERV 8 Dust Defense, Pleated HVAC AC Furnace Air Filters (3-Pack)

4.5 out of 5 Stars. 26 reviews
Free shipping, arrives in 3+ days

20x20x1 Reusable Air Filter,MERV 8 Electrostatic Aluminum AC/HVAC Furnace Filter,Washable Permanent Air Filters for Home/Office，Easy to Install, Fresher Air(Actual Size:19.75x19.75x0.82Inch) $35.99

20x20x1 Reusable Air Filter,MERV 8 Electrostatic Aluminum AC/HVAC Furnace Filter,Washable Permanent Air Filters for Home/Office，Easy to Install, Fresher Air(Actual Size:19.75x19.75x0.82Inch)
Available in additional 5 sizes
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20x20x1 Reusable Air Filter,MERV 8 Electrostatic Aluminum AC/HVAC Furnace Filter,Washable Permanent Air Filters for Home/Office，Easy to Install, Fresher Air(Actual Size:19.75x19.75x0.82Inch)

4.2 out of 5 Stars. 6 reviews
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14x24x1, Percisionaire Ez Flow Ii Front Panel Merv 4, 10055.011424, Pack12 $42.02

14x24x1, Percisionaire Ez Flow Ii Front Panel Merv 4, 10055.011424, Pack12
current price $42.02

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3 out of 5 Stars. 2 reviews
Free shipping, arrives in 3+ days

Filter King 14x24x1 Air Filter | 3-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 13.5 x 23.5 x .75" $34.50

Filter King 14x24x1 Air Filter | 3-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 13.5 x 23.5 x .75"
current price $34.50

Filter King 14x24x1 Air Filter | 3-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 13.5 x 23.5 x .75"

5 out of 5 Stars. 16 reviews
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14x20x1 (13_1/2x19_1/2) Pure Carbon Odor Reduction Furnace Air Filters 6 Pack $71.99

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14x20x1 (13_1/2x19_1/2) Pure Carbon Odor Reduction Furnace Air Filters 6 Pack

5 out of 5 Stars. 1 reviews
Free shipping, arrives in 3+ days

Filtrete 20x30x1 HVAC Furnace Air Filter, MPR 300 MERV 5, Dust Reduction, 6 Pack $39.99

Filtrete 20x30x1 HVAC Furnace Air Filter, MPR 300 MERV 5, Dust Reduction, 6 Pack
current price $39.99

Filtrete 20x30x1 HVAC Furnace Air Filter, MPR 300 MERV 5, Dust Reduction, 6 Pack

4.4 out of 5 Stars. 7 reviews
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Free shipping, arrives Sun, Feb 8

Simply Filters 14x14x1 MERV 8, MPR 600, AC Furnace HVAC Air Filter (6 Pack) $22.93 Was $34.97

Simply Filters 14x14x1 MERV 8, MPR 600, AC Furnace HVAC Air Filter (6 Pack)
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4.7 out of 5 Stars. 566 reviews
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Filterbuy 18x20x1 MERV 11 Allergen Defense, Pleated HVAC AC Furnace Air Filters (6-Pack) $39.96 Was $59.75

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Filterbuy 18x20x1 MERV 11 Allergen Defense, Pleated HVAC AC Furnace Air Filters (6-Pack)

4.7 out of 5 Stars. 26 reviews
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Filterbuy 12x12x1 MERV 8 Dust Defense, Pleated HVAC AC Furnace Air Filters (6-Pack) $31.48 Was $34.98 $5.25/count

Filterbuy 12x12x1 MERV 8 Dust Defense, Pleated HVAC AC Furnace Air Filters (6-Pack)
current price Now $31.48, Was $34.98
$5.25/count

Filterbuy 12x12x1 MERV 8 Dust Defense, Pleated HVAC AC Furnace Air Filters (6-Pack)

4.7 out of 5 Stars. 86 reviews
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Filterbuy 12x24x1 MERV 13 Health Defense, Pleated HVAC AC Furnace Air Filters (3-Pack) $44.97

Filterbuy 12x24x1 MERV 13 Health Defense, Pleated HVAC AC Furnace Air Filters (3-Pack)
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4.6 out of 5 Stars. 12 reviews
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Filterbuy 16x25x1 MERV 13 Health Defense, Pleated HVAC AC Furnace Air Filters (4-Pack) $40.46 Was $44.96

Filterbuy 16x25x1 MERV 13 Health Defense, Pleated HVAC AC Furnace Air Filters (4-Pack)
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Filterbuy 16x25x1 MERV 13 Health Defense, Pleated HVAC AC Furnace Air Filters (4-Pack)

4.8 out of 5 Stars. 663 reviews
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4006876 AIR FILTR SYNTHTC 14X25"" True Blue 14 in. W X 25 in. H X 1 in. D Synthetic 7 MERV Pleated Air Filter ,(Pack of 12) $68.94 $5.75/count

4006876 AIR FILTR SYNTHTC 14X25"" True Blue 14 in. W X 25 in. H X 1 in. D Synthetic 7 MERV Pleated Air Filter ,(Pack of 12)
current price $68.94
$5.75/count

4006876 AIR FILTR SYNTHTC 14X25"" True Blue 14 in. W X 25 in. H X 1 in. D Synthetic 7 MERV Pleated Air Filter ,(Pack of 12)

Free shipping, arrives in 3+ days

Glasfloss ZL 12x24x1 MERV 10 Pleated AC Furnace Air Filters. Box of 4. Exact Size: 11-3/8 x 23-3/8 x 7/8 $32.95

Glasfloss ZL 12x24x1 MERV 10 Pleated AC Furnace Air Filters. Box of 4. Exact Size: 11-3/8 x 23-3/8 x 7/8
current price $32.95

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Free shipping, arrives in 3+ days

Best seller Filtrete 18x20x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 2 Filters $19.88 $9.94/ea

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Filtrete 18x20x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 2 Filters

4.5 out of 5 Stars. 640 reviews
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The Ultimate Furnace A/C Filter - Washable, Permanent, Reusable, Electrostatic = Traps dust like a magnet - 5-Stage - Lab Certified MERV 9 - (16x20x1) $69.99

The Ultimate Furnace A/C Filter - Washable, Permanent, Reusable, Electrostatic = Traps dust like a magnet - 5-Stage - Lab Certified MERV 9 - (16x20x1)
current price $69.99

The Ultimate Furnace A/C Filter - Washable, Permanent, Reusable, Electrostatic = Traps dust like a magnet - 5-Stage - Lab Certified MERV 9 - (16x20x1)

1 out of 5 Stars. 1 reviews
Free shipping, arrives in 3+ days

Colorfil 12x24x1 Odor Removal and Color Changing Pleated AC Furnace Air Filter, MERV 8 (2-Pack) $39.99

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Colorfil 12x24x1 Odor Removal and Color Changing Pleated AC Furnace Air Filter, MERV 8 (2-Pack)

4.7 out of 5 Stars. 2058 reviews
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6 Pack of 16x25x1 MERV 10 Pleated Air Filters by Glasfloss. Actual Size: 15-1/2 x 24-1/2 x 7/8 $39.95 Was $48.53

6 Pack of 16x25x1 MERV 10 Pleated Air Filters by Glasfloss. Actual Size: 15-1/2 x 24-1/2 x 7/8
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4.5 out of 5 Stars. 28 reviews
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AC Furnace Air Filter Reusable Washable Cut to Fit 2 Pack 20x25x1 $34.21

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5 out of 5 Stars. 2 reviews
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AMI PARTS Filtrete 20x25x1 AC Furnace Air Filter, MERV 8, Pleated 1-Inch Electrostatic Air Cleaning Filter, 4 Pack $35.99

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current price $35.99

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Best seller Filtrete 16x24x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 2 Filters $19.88 $9.94/ea

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Filtrete 16x24x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 2 Filters

4.2 out of 5 Stars. 353 reviews
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Precisionaire EZ Flow II Furnace Air Filter - Fiberglass, 1 MERV - 12 Pack, 14 x 24 x 1 $53.35

Precisionaire EZ Flow II Furnace Air Filter - Fiberglass, 1 MERV - 12 Pack, 14 x 24 x 1
current price $53.35

Precisionaire EZ Flow II Furnace Air Filter - Fiberglass, 1 MERV - 12 Pack, 14 x 24 x 1

5 out of 5 Stars. 1 reviews
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14x20x1 (13_1/2x19_1/2) Pleated MERV 12 Air Filters 6 Pack $49.99

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14x20x1 (13_1/2x19_1/2) Pleated MERV 12 Air Filters 6 Pack

4.5 out of 5 Stars. 10 reviews
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Filterbuy 12x24x1 MERV 8 Dust Defense, Pleated HVAC AC Furnace Air Filters (3-Pack) $32.97

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current price $32.97

Filterbuy 12x24x1 MERV 8 Dust Defense, Pleated HVAC AC Furnace Air Filters (3-Pack)

4.7 out of 5 Stars. 26 reviews
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Filtrete Air Filter, MPR 1600, MERV 12, Healthy Living Ultra-Allergen 3-Month Pleated 1-Inch Air Filters (Pack of 4) $34.45

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current price $34.45
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Filtrete Air Filter, MPR 1600, MERV 12, Healthy Living Ultra-Allergen 3-Month Pleated 1-Inch Air Filters (Pack of 4)

4.8 out of 5 Stars. 1466 reviews
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Honeywell FC100A1037 Furnace Filters, 20x25x4 Air Filter Replacement Merv 11 Filter Media with Homequip Disposal Bag $47.99

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Honeywell FC100A1037 Furnace Filters, 20x25x4 Air Filter Replacement Merv 11 Filter Media with Homequip Disposal Bag

4.4 out of 5 Stars. 21 reviews
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Best seller Filtrete 16x16x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 4 Pack $39.76 $9.94/ea

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Filtrete 16x16x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 4 Pack

4.2 out of 5 Stars. 251 reviews
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Free shipping, arrives Sun, Feb 8

Filtrete 15x20x1 Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 4 Filters $39.76

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4.1 out of 5 Stars. 222 reviews
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Filtrete 20x25x4 Refillable Air Filter Kit, MPR 1550 MERV 12, Ultra Allergen Reduction, 1 Reusable Frame with 2 HVAC Filters $89.99

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current price $89.99

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4.8 out of 5 Stars. 137 reviews
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Filtrete 20x20x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 4 Pack $53.50 $13.38/ea

Filtrete 20x20x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 4 Pack
current price $53.50
$13.38/ea

Filtrete 20x20x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 4 Pack

4.7 out of 5 Stars. 565 reviews
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Filtrete 20x22x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter $5.64

Filtrete 20x22x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter
current price $5.64

Filtrete 20x22x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter

4.3 out of 5 Stars. 119 reviews
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Filterbuy 16x20x1 MERV 13 Health Defense, Pleated HVAC AC Furnace Air Filters (2-Pack) $39.98

Filterbuy 16x20x1 MERV 13 Health Defense, Pleated HVAC AC Furnace Air Filters (2-Pack)
current price $39.98

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4.7 out of 5 Stars. 21 reviews
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Filterbuy 20x20x1 MERV 8 Dust Defense, Pleated HVAC AC Furnace Air Filters (12-Pack) $74.88

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Filterbuy 20x20x1 MERV 8 Dust Defense, Pleated HVAC AC Furnace Air Filters (12-Pack)

4.9 out of 5 Stars. 173 reviews
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Glasfloss ZL 14x20x1 MERV 10 Pleated AC Furnace Air Filters. Box of 4. Exact Size: 13-1/2 x 19-1/2 x 7/8 $32.95

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current price $32.95

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Filtrete 14x25x1 Smart Air Filter, MPR 2200 MERV 13, Premium Allergen and Home Pollutants, 1 Filter $49.98

Filtrete 14x25x1 Smart Air Filter, MPR 2200 MERV 13, Premium Allergen and Home Pollutants, 1 Filter
current price $49.98

Filtrete 14x25x1 Smart Air Filter, MPR 2200 MERV 13, Premium Allergen and Home Pollutants, 1 Filter

4.6 out of 5 Stars. 27 reviews
Free shipping, arrives in 3+ days

Filterbuy 18x20x1 MERV 11 Allergen Defense, Pleated HVAC AC Furnace Air Filters (4-Pack) $39.96

Filterbuy 18x20x1 MERV 11 Allergen Defense, Pleated HVAC AC Furnace Air Filters (4-Pack)
current price $39.96

Filterbuy 18x20x1 MERV 11 Allergen Defense, Pleated HVAC AC Furnace Air Filters (4-Pack)

4.8 out of 5 Stars. 76 reviews
Free shipping, arrives in 3+ days

Nordic Pure 20x25x4 (3 5/8) Pleated MERV 10 Air Filter 1 Pack $33.99

Nordic Pure 20x25x4 (3 5/8) Pleated MERV 10 Air Filter 1 Pack
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current price $33.99
Options from $33.99 – $129.99

Nordic Pure 20x25x4 (3 5/8) Pleated MERV 10 Air Filter 1 Pack

5 out of 5 Stars. 2 reviews
Free shipping, arrives in 3+ days

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