Sort by|

18x1

Uses item details. Price when purchased online

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

Simply Filters 18x18x1 MERV 8, MPR 600, AC Furnace HVAC Air Filter (6 Pack)
Sponsored
From$2460

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

4.8 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

6 Pack of 18x18x1 MERV 10 Pleated Air Filters by Glasfloss. Actual Size: 17-1/2 x 17-1/2 x 7/8
Sponsored
current price $41.95

6 Pack of 18x18x1 MERV 10 Pleated Air Filters by Glasfloss. Actual Size: 17-1/2 x 17-1/2 x 7/8

4.8 out of 5 Stars. 10 reviews

Filterbuy 18x18x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 5-Pack $39.95

Filterbuy 18x18x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 5-Pack
Sponsored
current price $39.95

Filterbuy 18x18x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 5-Pack

4.7 out of 5 Stars. 13 reviews

Simply Filters 14x18x1 MERV 8, MPR 600, AC Furnace HVAC Air Filter (6 Pack) From $22.58

Simply Filters 14x18x1 MERV 8, MPR 600, AC Furnace HVAC Air Filter (6 Pack)
Sponsored
From$2258

Simply Filters 14x18x1 MERV 8, MPR 600, AC Furnace HVAC Air Filter (6 Pack)

5 out of 5 Stars. 3 reviews

50+ bought since yesterday Filtrete 18x18x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter $5.64

Filtrete 18x18x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter
current price $5.64

Filtrete 18x18x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter

4.5 out of 5 Stars. 295 reviews
Save with
Walmart Plus

AAF 118181 Air Filter, 18 in L x 18 in W x 1 in T $44.39

AAF 118181 Air Filter, 18 in L x 18 in W x 1 in T
current price $44.39

AAF 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

True Blue 118181 Furnace Air Filter, 18" x 18" x 1"
current price $49.84

True Blue 118181 Furnace Air Filter, 18" x 18" x 1"

1 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

18 in. x 18 in. x 1 in. Allergen Plus Pleated Air Filter FPR 7, MERV 11 (2-Pack)
current price $25.70

18 in. x 18 in. x 1 in. Allergen Plus Pleated Air Filter FPR 7, MERV 11 (2-Pack)

5 out of 5 Stars. 2 reviews
Save with
Walmart Plus

True Blue 118181 Furnace Air Filter 18 x 18 x 1

True Blue 118181 Furnace Air Filter 18 x 18 x 1

True Blue 118181 Furnace Air Filter 18 x 18 x 1

5 out of 5 Stars. 1 reviews

Aerostar 18x18x1 MERV 8 Pleated Air Filter, AC Furnace Air Filter, 6 Pack $39.96 $6.66/count

Aerostar 18x18x1 MERV 8 Pleated Air Filter, AC Furnace Air Filter, 6 Pack
current price $39.96
$6.66/count

Aerostar 18x18x1 MERV 8 Pleated Air Filter, AC Furnace Air Filter, 6 Pack

4.8 out of 5 Stars. 49 reviews

Simply Filters 14x18x1 MERV 13, MPR 1500, AC Furnace HVAC Air Filter (2 Pack) From $32.07

Simply Filters 14x18x1 MERV 13, MPR 1500, AC Furnace HVAC Air Filter (2 Pack)
Sponsored
From$3207

Simply Filters 14x18x1 MERV 13, MPR 1500, AC Furnace HVAC Air Filter (2 Pack)

4.3 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

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"
Sponsored
current price $39.88

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"

4.8 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

Do it Best 18 In. x 18 In. x 1 In. MERV 11 Furnace Filter Pack of 6
current price $76.08

Do 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

Precisionaire Furnace Air Filter 18 " X 18 " X 1 " Fiberglass
current price $43.15

Precisionaire Furnace Air Filter 18 " X 18 " X 1 " Fiberglass

Furnace Filter 18" x 18" x 1" Pleated Disposable $22.81

Furnace Filter 18" x 18" x 1" Pleated Disposable
current price $22.81

Furnace 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

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.
current price $84.82

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.

Do it Best 18 In. x 18 In. x 1 In. MERV 8 Furnace Filter (12-Pack) 412245 $48.95 Was $63.05

Do it Best 18 In. x 18 In. x 1 In. MERV 8 Furnace Filter (12-Pack) 412245
current price Now $48.95, Was $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

18x18x1 Air Filter MERV 11 Pleated HVAC Furnace Air Filter, Allergy 6-Pack, Made in the USA
current price $47.99

18x18x1 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

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.
current price $114.31

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.

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

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.
current price $85.10

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.

Filterbuy 18x18x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 3-Pack $33.99

Filterbuy 18x18x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 3-Pack
Sponsored
current price $33.99

Filterbuy 18x18x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 3-Pack

5 out of 5 Stars. 17 reviews

Filterbuy 18x18x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 12-Pack $89.88

Filterbuy 18x18x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 12-Pack
Sponsored
current price $89.88

Filterbuy 18x18x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 12-Pack

4.9 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

Best Air B1-1818-8-12 18" x 18" x 1" Pleated Furnace Air Filter 90 Days - Quantity of 12
current price $94.83

Best 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

Glasfloss ZLP14181 Z-Line Pleated Filter MERV 10 40% Eff - 14 in. X 18 in. X 1 - 0.3 Lbs
current price $29.47

Glasfloss 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

Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 4 Pack
current price $53.96
$13.49/ea

Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 4 Pack

4.7 out of 5 Stars. 522 reviews
Save with
Walmart Plus

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

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.
current price $51.46

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.

14 in. x 18 in. x 1 in. Allergen Plus Pleated Air Filter FPR-7, MERV-11 (2-Pack) $21.99

14 in. x 18 in. x 1 in. Allergen Plus Pleated Air Filter FPR-7, MERV-11 (2-Pack)
current price $21.99

14 in. x 18 in. x 1 in. Allergen Plus Pleated Air Filter FPR-7, MERV-11 (2-Pack)

4.3 out of 5 Stars. 3 reviews
Save with
Walmart Plus

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

True Blue 14 In. x 18 In. x 1 In. Merv 2 Fiberglass Furnace Filter Pack of 12

4 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

PureFlow, Home Furnace Air Filter 18x18x1, with 4 Layers of Advanced Filtration Technology, MERV-13 Pack-of-2
Available in additional 21 options
From$3282

PureFlow, Home Furnace Air Filter 18x18x1, with 4 Layers of Advanced Filtration Technology, MERV-13 Pack-of-2

4.1 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

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

Simply Filters 13x18x1 MERV 11, MPR 1000, AC Furnace HVAC Air Filter (6 Pack)
Sponsored
From$3317

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

Filterbuy 18x18x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 6-Pack
Sponsored
current price Now $39.96, Was $58.42

Filterbuy 18x18x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 6-Pack

4.8 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

True Blue 118181 18" x 18" x 1" Flat Panel Spun Fiberglass Disposable Furnace Air Filter MERV 2 - Quantity of 12

Other options to consider

Best seller Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 1 Filter From $11.88

Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 1 Filter
Available in additional 3 options
From$1188

Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 1 Filter

4.3 out of 5 Stars. 388 reviews
Save with
Walmart Plus

Best seller Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter $18.47

Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter
current price $18.47

Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter

4.8 out of 5 Stars. 575 reviews
Save with
Walmart Plus

Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 1 Filter $13.49

Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 1 Filter
current price $13.49

Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 1 Filter

4.7 out of 5 Stars. 529 reviews
Save with
Walmart Plus

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

Filtrete 18x18x1 Air Filter, MPR 1500 MERV 12, Advanced Allergen Reduction, 1 New Filter

4.8 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

18x18x1 (17_3/4x17_3/4) Furnace Air Filters MERV 10 Pleated Plus Carbon 4 Pack
Available in additional 5 options
From$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

18x18x1 (17_3/4x17_3/4) Pure Carbon Odor Reduction Furnace Air Filters 6 Pack
Available in additional 3 options
From$5399

18x18x1 (17_3/4x17_3/4) Pure Carbon Odor Reduction Furnace Air Filters 6 Pack

4 out of 5 Stars. 1 reviews

Aerostar 18x18x1 MERV 6 Pleated Air Filter, AC Furnace Air Filter, 6 Pack From $32.99

Aerostar 18x18x1 MERV 6 Pleated Air Filter, AC Furnace Air Filter, 6 Pack
Available in additional 2 options
From$3299

Aerostar 18x18x1 MERV 6 Pleated Air Filter, AC Furnace Air Filter, 6 Pack

4.7 out of 5 Stars. 64 reviews

18x18x1 Air Filter Glasfloss GDS Series Disposable - Case of 12 $80.00

18x18x1 Air Filter Glasfloss GDS Series Disposable - Case of 12
current price $80.00

18x18x1 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

Proairtek AF18181M08SWH Model 18x18x1 Air Filter, MERV 8; Ideal for Anyone Wanting Clean, Crisp Air in Their Home
current price $19.99

Proairtek 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

18x18x1 (17_3/4x17_3/4) Pleated Air Filters MERV 13 Plus Carbon 4 Pack
Available in additional 5 options
From$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

SpiroPure 18X18X1 MERV 11 Pleated Air Filters - Made in USA (6 Pack)
Available in additional 3 options
From$4744

SpiroPure 18X18X1 MERV 11 Pleated Air Filters - Made in USA (6 Pack)

5 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

Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria, Virus, 4 Pack
current price Now $46.88, Was $56.86
$11.72/ea

Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria, Virus, 4 Pack

4.8 out of 5 Stars. 524 reviews
Save with
Walmart Plus

Glasfloss 18X18X1 PREPLEAT #40 ZLP18181 12/CS $35.00

Glasfloss 18X18X1 PREPLEAT #40 ZLP18181 12/CS
current price $35.00

Glasfloss 18X18X1 PREPLEAT #40 ZLP18181 12/CS

1 out of 5 Stars. 1 reviews

18x18x1 (17_3/4x17_3/4) Pleated MERV 12 Air Filters 6 Pack From $41.99

18x18x1 (17_3/4x17_3/4) Pleated MERV 12 Air Filters 6 Pack
Available in additional 5 options
From$4199

18x18x1 (17_3/4x17_3/4) Pleated MERV 12 Air Filters 6 Pack

5 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

Filtrete 14x18x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 1 Filter
Available in additional 2 options
From$1188

Filtrete 14x18x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 1 Filter

4.5 out of 5 Stars. 505 reviews
Save with
Walmart Plus

Clorox 18x18x1 Air Filter MERV 13 Virus & Bacteria Defense HVAC Furnace Filters, MPR 1900-2200 & FPR 9-10, 4 Count From $34.99

Clorox 18x18x1 Air Filter MERV 13 Virus & Bacteria Defense HVAC Furnace Filters, MPR 1900-2200 & FPR 9-10, 4 Count
Available in additional 3 options
From$3499

Clorox 18x18x1 Air Filter MERV 13 Virus & Bacteria Defense HVAC Furnace Filters, MPR 1900-2200 & FPR 9-10, 4 Count

5 out of 5 Stars. 4 reviews

Highly rated by customers

Related Products