18x1(52)
Uses item details. Price when purchased online
Aerostar 18x18x1 MERV 8 Air Filter, Pleated AC Furnace HVAC, Dust Pollen Pet Dander, 4 Pack $33.20 $5.53/count
Sponsored
$3320
current price $33.20$5.53/count
Aerostar 18x18x1 MERV 8 Air Filter, Pleated AC Furnace HVAC, Dust Pollen Pet Dander, 4 Pack
54.2 out of 5 Stars. 5 reviews
Aerostar 18x18x1 MERV 13 Air Filter, Pleated AC Furnace HVAC, Smoke Bacteria Allergy, 6 Pack $54.68 $9.11/count
Sponsored
$5468
current price $54.68$9.11/count
Aerostar 18x18x1 MERV 13 Air Filter, Pleated AC Furnace HVAC, Smoke Bacteria Allergy, 6 Pack
43.5 out of 5 Stars. 4 reviews
Aerostar 18x18x1 MERV 8 Air Filter, Pleated AC Furnace HVAC, Dust Pollen Pet Dander, 6 Pack $39.96 $6.66/count
Sponsored
$3996
current price $39.96$6.66/count
Aerostar 18x18x1 MERV 8 Air Filter, Pleated AC Furnace HVAC, Dust Pollen Pet Dander, 6 Pack
494.8 out of 5 Stars. 49 reviews
Aerostar 18x18x1 MERV 13 Air Filter, Pleated AC Furnace HVAC, Smoke Bacteria Allergy, 4 Pack $40.50
Sponsored
$4050
current price $40.50Aerostar 18x18x1 MERV 13 Air Filter, Pleated AC Furnace HVAC, Smoke Bacteria Allergy, 4 Pack
24.5 out of 5 Stars. 2 reviews
Best seller 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
3454.5 out of 5 Stars. 345 reviews
Aerostar 18x18x1 MERV 8 Air Filter, Pleated AC Furnace HVAC, Dust Pollen Pet Dander, 4 Pack $33.20 $5.53/count
$3320
current price $33.20$5.53/count
Aerostar 18x18x1 MERV 8 Air Filter, Pleated AC Furnace HVAC, Dust Pollen Pet Dander, 4 Pack
54.2 out of 5 Stars. 5 reviews
Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 1 Filter From $13.49
2 options
Available in additional 2 optionsFrom$1349
Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 1 Filter
5504.7 out of 5 Stars. 550 reviews
AAF 118181 Air Filter, 18 in L x 18 in W x 1 in T $41.03
$4103
current price $41.03AAF 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" $59.60
$5960
current price $59.60True Blue 118181 Furnace Air Filter, 18" x 18" x 1"
11 out of 5 Stars. 1 reviews
K&N HVC-8-11818 HVAC Filter; 18 x 18 x 1, MERV 8 $49.99
$4999
current price $49.99K&N HVC-8-11818 HVAC Filter; 18 x 18 x 1, MERV 8
Aerostar 18x18x1 MERV 6 Air Filter, Pleated AC Furnace HVAC, Dust Lint Control, 6 Pack From $38.92
Sponsored
From$3892
Aerostar 18x18x1 MERV 6 Air Filter, Pleated AC Furnace HVAC, Dust Lint Control, 6 Pack
724.7 out of 5 Stars. 72 reviews
Aerostar 18x18x1 MERV 11 Air Filter, Pleated AC Furnace HVAC, Pet Dander Mold Smoke, 6 Pack $43.98 $7.33/count
Sponsored
$4398
current price $43.98$7.33/count
Aerostar 18x18x1 MERV 11 Air Filter, Pleated AC Furnace HVAC, Pet Dander Mold Smoke, 6 Pack
124.9 out of 5 Stars. 12 reviews
Aerostar 18x18x1 MERV 8 Air Filter, Pleated AC Furnace HVAC, Dust Pollen Pet Dander, 6 Pack $39.96 $6.66/count
$3996
current price $39.96$6.66/count
Aerostar 18x18x1 MERV 8 Air Filter, Pleated AC Furnace HVAC, Dust Pollen Pet Dander, 6 Pack
494.8 out of 5 Stars. 49 reviews
Aerostar 18x18x1 MERV 11 Air Filter, Pleated AC Furnace HVAC, Pet Dander Mold Smoke, 4 Pack $37.50 $6.25/count
$3750
current price $37.50$6.25/count
Aerostar 18x18x1 MERV 11 Air Filter, Pleated AC Furnace HVAC, Pet Dander Mold Smoke, 4 Pack
25 out of 5 Stars. 2 reviews
Pamlico Air 4011401 18 x 18 x 1 in. Fiberglass 4 MERV Air Filter - Pack of 12 $61.45
$6145
current price $61.45Pamlico Air 4011401 18 x 18 x 1 in. Fiberglass 4 MERV Air Filter - Pack of 12
15 out of 5 Stars. 1 reviews
Filter King 18x18x1 Air Filter | 6-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 17.5 x 17.5 x .75" $43.14
$4314
current price $43.14Filter King 18x18x1 Air Filter | 6-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 17.5 x 17.5 x .75"
154.9 out of 5 Stars. 15 reviews
Filter King 18x18x1 Air Filter | 4-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 17.5 x 17.5 x .75" $36.68
$3668
current price $36.68Filter King 18x18x1 Air Filter | 4-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 17.5 x 17.5 x .75"
174.9 out of 5 Stars. 17 reviews
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. $111.14
$11114
current price $111.1418x18x1 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.
Aerostar 18x18x1 MERV 13 Air Filter, Pleated AC Furnace HVAC, Smoke Bacteria Allergy, 6 Pack $54.68 $9.11/count
$5468
current price $54.68$9.11/count
Aerostar 18x18x1 MERV 13 Air Filter, Pleated AC Furnace HVAC, Smoke Bacteria Allergy, 6 Pack
43.5 out of 5 Stars. 4 reviews
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 11 Air Filter, Pleated AC Furnace HVAC, Pet Dander Mold Smoke, 4 Pack $37.50 $6.25/count
Sponsored
$3750
current price $37.50$6.25/count
Aerostar 18x18x1 MERV 11 Air Filter, Pleated AC Furnace HVAC, Pet Dander Mold Smoke, 4 Pack
25 out of 5 Stars. 2 reviews
12 Pack of 18x18x1 MERV 10 Pleated Air Filters by Glasfloss. Actual Size: 17-1/2 x 17-1/2 x 7/8 $79.95
Sponsored
$7995
current price $79.9512 Pack of 18x18x1 MERV 10 Pleated Air Filters by Glasfloss. Actual Size: 17-1/2 x 17-1/2 x 7/8
54 out of 5 Stars. 5 reviews
Glasfloss ZLP14181 Z-Line Pleated Filter MERV 10 40% Eff - 14 in. X 18 in. X 1 - 0.3 Lbs $30.31
$3031
current price $30.31Glasfloss ZLP14181 Z-Line Pleated Filter MERV 10 40% Eff - 14 in. X 18 in. X 1 - 0.3 Lbs
K&N HVC-11818 HVAC Filter; 18 x 18 x 1, MERV 11 $59.99
$5999
current price $59.99K&N HVC-11818 HVAC Filter; 18 x 18 x 1, MERV 11
Filter King 18x18x1 Air Filter | 4-PACK | MERV 11 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 17.5 x 17.5 x .75" $52.40
$5240
current price $52.40Filter King 18x18x1 Air Filter | 4-PACK | MERV 11 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 17.5 x 17.5 x .75"
154.9 out of 5 Stars. 15 reviews
Aerostar 18x18x1 MERV 13 Air Filter, Pleated AC Furnace HVAC, Smoke Bacteria Allergy, 4 Pack $40.50
$4050
current price $40.50Aerostar 18x18x1 MERV 13 Air Filter, Pleated AC Furnace HVAC, Smoke Bacteria Allergy, 4 Pack
24.5 out of 5 Stars. 2 reviews
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.
3M Filtrete 2017-4 Purple 18" x 18" x 1" MPR 1500 3 Month Air Filter - Quantity of 4 $129.89
$12989
current price $129.893M Filtrete 2017-4 Purple 18" x 18" x 1" MPR 1500 3 Month Air Filter - Quantity of 4
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.
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)
44.5 out of 5 Stars. 4 reviews
Clorox 18x18x1 Air Filter MERV 8 Dust & Lint Defense HVAC Furnace Filters, MPR 600 & FPR 5, 4 Count From $34.99
Sponsored
From$3499
Clorox 18x18x1 Air Filter MERV 8 Dust & Lint Defense HVAC Furnace Filters, MPR 600 & FPR 5, 4 Count
55 out of 5 Stars. 5 reviews
Aerostar 14x18x1 MERV 13 Air Filter, Pleated AC Furnace HVAC, Smoke Bacteria Allergy, 6 Pack $47.48 Was $72.45 $7.91/count
Sponsored
Now$4748
current price Now $47.48, Was $72.45$72.45
$7.91/count
Aerostar 14x18x1 MERV 13 Air Filter, Pleated AC Furnace HVAC, Smoke Bacteria Allergy, 6 Pack
214.6 out of 5 Stars. 21 reviews
Filter King 18x18x1 Air Filter | 4-PACK | MERV 13 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 17.5 x 17.5 x .75" $47.56
$4756
current price $47.56Filter King 18x18x1 Air Filter | 4-PACK | MERV 13 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 17.5 x 17.5 x .75"
324.6 out of 5 Stars. 32 reviews
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.
18x18x1 MERV 10 Pleated AC Furnace Air Filters by Glasfloss Industries. ( 8 Pack ) Exact Size: 17-1/2 x 17-1/2 x 7/8 $56.98
$5698
current price $56.9818x18x1 MERV 10 Pleated AC Furnace Air Filters by Glasfloss Industries. ( 8 Pack ) Exact Size: 17-1/2 x 17-1/2 x 7/8
Aerostar 18x18x1 MERV 11 Air Filter, Pleated AC Furnace HVAC, Pet Dander Mold Smoke, 6 Pack $43.98 $7.33/count
$4398
current price $43.98$7.33/count
Aerostar 18x18x1 MERV 11 Air Filter, Pleated AC Furnace HVAC, Pet Dander Mold Smoke, 6 Pack
124.9 out of 5 Stars. 12 reviews
Filter King 18x18x1 Air Filter | 6-PACK | MERV 13 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 17.5 x 17.5 x .75" $78.84
$7884
current price $78.84Filter King 18x18x1 Air Filter | 6-PACK | MERV 13 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 17.5 x 17.5 x .75"
264.9 out of 5 Stars. 26 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
Flanders 84858.011818 18 x 18 x 1 in. NaturalAire Standard Pleated Air Filter - Pack Of 12 $91.84
$9184
current price $91.84Flanders 84858.011818 18 x 18 x 1 in. NaturalAire Standard Pleated Air Filter - Pack Of 12
Filter King 18x18x1 Air Filter | 6-PACK | MERV 11 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 17.5 x 17.5 x .75" $65.46
$6546
current price $65.46Filter King 18x18x1 Air Filter | 6-PACK | MERV 11 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 17.5 x 17.5 x .75"
264.9 out of 5 Stars. 26 reviews
18x18x1 MERV 10 Pleated HVAC Air Filters by Glasfloss. ( Quantity 5 ) Exact Size: 17-1/2 x 17-1/2 x 7/8 $39.98
$3998
current price $39.9818x18x1 MERV 10 Pleated HVAC Air Filters by Glasfloss. ( Quantity 5 ) Exact Size: 17-1/2 x 17-1/2 x 7/8
Flanders 10055.011418 Standard Grade EZ Flow II Furnace Filter 12/Pack, 18" x 14" x 1" - Lot of 12 $44.29 Was $70.82
Now$4429
current price Now $44.29, Was $70.82$70.82
Flanders 10055.011418 Standard Grade EZ Flow II Furnace Filter 12/Pack, 18" x 14" x 1" - Lot of 12
18x18x1 Air Filter MERV 11 Comparable to MPR 1000, MPR 1200 & FPR 7 Electrostatic Pleated Air Conditioner Filter 6 Pack HVAC Premium USA Made 18x18x1 Furnace Filters by AIRX FILTERS WICKED CLEAN AIR. $49.30
$4930
current price $49.3018x18x1 Air Filter MERV 11 Comparable to MPR 1000, MPR 1200 & FPR 7 Electrostatic Pleated Air Conditioner Filter 6 Pack HVAC Premium USA Made 18x18x1 Furnace Filters by AIRX FILTERS WICKED CLEAN AIR.
18x18x1 Air Filter MERV 13 Comparable to MPR 1500 - 2200 & FPR 9 Electrostatic Pleated Air Conditioner Filter 6 Pack HVAC AC Premium USA Made 18x18x1 Furnace Filters by AIRX FILTERS WICKED CLEAN AIR. $56.41
$5641
current price $56.4118x18x1 Air Filter MERV 13 Comparable to MPR 1500 - 2200 & FPR 9 Electrostatic Pleated Air Conditioner Filter 6 Pack HVAC AC Premium USA Made 18x18x1 Furnace Filters by AIRX FILTERS WICKED CLEAN AIR.
Filter King 4.5x18x1 Air Filter | 4-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 4.5 x 18 x .75" $71.88
$7188
current price $71.88Filter King 4.5x18x1 Air Filter | 4-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 4.5 x 18 x .75"
Filter King 4x18x1 Air Filter | 4-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 4 x 18 x .75" $66.56
$6656
current price $66.56Filter King 4x18x1 Air Filter | 4-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 4 x 18 x .75"
Filterbuy 18x18x1 Air Filter MERV 13 Smoke Defense, Pleated HVAC AC Furnace Filter Replacement, 1-Pack $33.99 $33.99/in
$3399
current price $33.99$33.99/in
Filterbuy 18x18x1 Air Filter MERV 13 Smoke Defense, Pleated HVAC AC Furnace Filter Replacement, 1-Pack
824.7 out of 5 Stars. 82 reviews
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
18x18x1 (17_3/4x17_3/4) Furnace Air Filters MERV 12 Pleated Plus Carbon 12 Pack From $54.99
5 options
Available in additional 5 optionsFrom$5499
18x18x1 (17_3/4x17_3/4) Furnace Air Filters MERV 12 Pleated Plus Carbon 12 Pack
18x18x1 (17_3/4x17_3/4) Pleated Air Filters MERV 13 Plus Carbon 4 Pack From $57.99
4 options
Available in additional 4 optionsFrom$5799
18x18x1 (17_3/4x17_3/4) Pleated Air Filters MERV 13 Plus Carbon 4 Pack
Other options to consider(358)
Best seller Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 1 Filter From $11.88
3 options
Available in additional 3 optionsFrom$1188
Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 1 Filter
4284.4 out of 5 Stars. 428 reviews
Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter From $18.47
3 options
Available in additional 3 optionsFrom$1847
Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter
6244.8 out of 5 Stars. 624 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
5754.5 out of 5 Stars. 575 reviews
AAF Flanders EZ Flow II MERV 4 Fiberglass MERV 1 Air Filter, 18x18x1 $40.62 Was $49.85 $131.03/lb
Now$4062
current price Now $40.62, Was $49.85$49.85
$131.03/lb
AAF Flanders EZ Flow II MERV 4 Fiberglass MERV 1 Air Filter, 18x18x1
73.1 out of 5 Stars. 7 reviews
Best seller Filtrete 14x18x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter From $18.47
2 options
Available in additional 2 optionsFrom$1847
Filtrete 14x18x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter
2054.8 out of 5 Stars. 205 reviews
Best seller Filtrete 14x18x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter $5.64
$564
current price $5.64Filtrete 14x18x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter
4584.6 out of 5 Stars. 458 reviews
Simply Filters 18x18x1 MERV 8, MPR 600, AC Furnace HVAC Air Filter (2 Pack) From $24.60
5 options
Available in additional 5 optionsFrom$2460
Simply Filters 18x18x1 MERV 8, MPR 600, AC Furnace HVAC Air Filter (2 Pack)
Aerostar 18x18x1 MERV 6 Air Filter, Pleated AC Furnace HVAC, Dust Lint Control, 6 Pack From $38.92
2 options
Available in additional 2 optionsFrom$3892
Aerostar 18x18x1 MERV 6 Air Filter, Pleated AC Furnace HVAC, Dust Lint Control, 6 Pack
724.7 out of 5 Stars. 72 reviews
Filterbuy 18x18x1 MERV 11 Allergen Defense, Pleated HVAC AC Furnace Air Filters (1-Pack) $10.97 $10.97/in
$1097
current price $10.97$10.97/in
Filterbuy 18x18x1 MERV 11 Allergen Defense, Pleated HVAC AC Furnace Air Filters (1-Pack)
1724.7 out of 5 Stars. 172 reviews
Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 700 MERV 8, Dust, Pollen, and Pet Dander Reduction, 6 Pack From $26.89
2 options
Available in additional 2 optionsFrom$2689
Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 700 MERV 8, Dust, Pollen, and Pet Dander Reduction, 6 Pack
95 out of 5 Stars. 9 reviews
Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1900 MERV 13, Premium Allergen, Bacteria and Virus, 6 Pack $72.64 $12.11/ea
$7264
current price $72.64$12.11/ea
Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1900 MERV 13, Premium Allergen, Bacteria and Virus, 6 Pack
6454.8 out of 5 Stars. 645 reviews
Filterbuy 18x18x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 4-Pack $34.96
$3496
current price $34.96Filterbuy 18x18x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 4-Pack
4254.8 out of 5 Stars. 425 reviews
Simply Filters 18x18x1 MERV 11, MPR 1000, AC Furnace HVAC Air Filter (6 Pack) From $29.97
6 options
Available in additional 6 optionsFrom$2997
Simply Filters 18x18x1 MERV 11, MPR 1000, AC Furnace HVAC Air Filter (6 Pack)
Clorox 18x18x1 Air Filter MERV 13 Virus & Bacteria Defense HVAC Furnace Filters, MPR 1900-2200 & FPR 9-10, 4 Count From $34.99
4 options
Available in additional 4 optionsFrom$3499
Clorox 18x18x1 Air Filter MERV 13 Virus & Bacteria Defense HVAC Furnace Filters, MPR 1900-2200 & FPR 9-10, 4 Count
55 out of 5 Stars. 5 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
$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
Filter King 18x18x1 Air Filter | 3-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 17.5 x 17.5 x .75" $48.06
$4806
current price $48.06Filter King 18x18x1 Air Filter | 3-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 17.5 x 17.5 x .75"
154.9 out of 5 Stars. 15 reviews
E-Z flow II 18x18x1 Air Filter Pack of 12 $39.06 Was $44.24
Now$3906
current price Now $39.06, Was $44.24$44.24
E-Z flow II 18x18x1 Air Filter Pack of 12
Filter King 18x18x1 Air Filter | 12-PACK | MERV 11 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 17.5 x 17.5 x .75" $124.68
$12468
current price $124.68Filter King 18x18x1 Air Filter | 12-PACK | MERV 11 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 17.5 x 17.5 x .75"
154.9 out of 5 Stars. 15 reviews
Aerostar 8x18x1 MERV 8 Air Filter, Pleated AC Furnace HVAC, Dust Pollen Pet Dander, 4 Pack $98.79 $24.70/count
$9879
current price $98.79$24.70/count
Aerostar 8x18x1 MERV 8 Air Filter, Pleated AC Furnace HVAC, Dust Pollen Pet Dander, 4 Pack
11 out of 5 Stars. 1 reviews
Filter King 18x18x1 Air Filter | 2-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 17.5 x 17.5 x .75" $35.44
$3544
current price $35.44Filter King 18x18x1 Air Filter | 2-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 17.5 x 17.5 x .75"
264.9 out of 5 Stars. 26 reviews
18x18x1 Air Filter Glasfloss GDS Series Disposable - Case of 12 $71.52
$7152
current price $71.5218x18x1 Air Filter Glasfloss GDS Series Disposable - Case of 12
18x18x1 (17_3/4x17_3/4) Pleated MERV 12 Air Filters 6 Pack From $41.99
5 options
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
Filter King 18x18x1 Air Filter | 12-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 17.5 x 17.5 x .75" $80.88
$8088
current price $80.88Filter King 18x18x1 Air Filter | 12-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 17.5 x 17.5 x .75"
264.9 out of 5 Stars. 26 reviews
18x18x1 (17_3/4x17_3/4) Pleated MERV 10 Air Filters 12 Pack From $39.99
5 options
Available in additional 5 optionsFrom$3999
18x18x1 (17_3/4x17_3/4) Pleated MERV 10 Air Filters 12 Pack
25 out of 5 Stars. 2 reviews
(4 pack) Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter $73.88 $18.47/ea
$7388
current price $73.88$18.47/ea
(4 pack) Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter
18x18x1 (17.75 x 17.75) PURAFILTER 2000 Allergen 8000 MERV 8 Air Filter $83.56
$8356
current price $83.5618x18x1 (17.75 x 17.75) PURAFILTER 2000 Allergen 8000 MERV 8 Air Filter
15 out of 5 Stars. 1 reviews
Filter King 18x18x1 Air Filter | 12-PACK | MERV 13 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 17.5 x 17.5 x .75" $118.92
$11892
current price $118.92Filter King 18x18x1 Air Filter | 12-PACK | MERV 13 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 17.5 x 17.5 x .75"
154.9 out of 5 Stars. 15 reviews
18x18x1 (17_3/4x17_3/4) Pure Carbon Odor Reduction Furnace Air Filters 6 Pack From $53.99
3 options
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
Filter King 18x18x1 Air Filter | 6-PACK | MERV 13 | HVAC Pleated AC Furnace Filters | MADE IN USA | Actual Size: 18 x 18 x .75" $105.90
$10590
current price $105.90Filter King 18x18x1 Air Filter | 6-PACK | MERV 13 | HVAC Pleated AC Furnace Filters | MADE IN USA | Actual Size: 18 x 18 x .75"
25 out of 5 Stars. 2 reviews
Simply Filters 18x18x1 MERV 13, MPR 1500, AC Furnace HVAC Air Filter (4 Pack) From $32.54
6 options
Available in additional 6 optionsFrom$3254
Simply Filters 18x18x1 MERV 13, MPR 1500, AC Furnace HVAC Air Filter (4 Pack)
18x18x1 (17_3/4x17_3/4) Pleated MERV 8 Air Filters 12 Pack From $39.49
5 options
Available in additional 5 optionsFrom$3949
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Filterbuy 18x18x1 Air Filter MERV 10 Odor Defense, Pleated HVAC AC Furnace Filter Replacement, 12-Pack $243.96
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current price $243.96Filterbuy 18x18x1 Air Filter MERV 10 Odor Defense, Pleated HVAC AC Furnace Filter Replacement, 12-Pack
Chenzhit 18x18x1 (6-Pack)Furnace Air Filters, MPR 1900 & FPR 10, MERV 13 Pleated Air Filter (Actual Size: 17.75x17.75x0.75 inch) $49.00
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E-Z flow II 18x18x1 Air Filter Pack of 12 $39.06
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18x18x1 (17_3/4x17_3/4) Pleated MERV 7 Air Filters 6 Pack From $38.99
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Filter King 35.5x18x1 Air Filter | 4-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 35.5 x 18 x .75" $91.72
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current price $91.72Filter King 35.5x18x1 Air Filter | 4-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 35.5 x 18 x .75"
Filterbuy 18x18x1 Air Filter MERV 11 Allergy Defense, Pleated HVAC AC Furnace Filter Replacement, 2-Pack $33.98
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18X18X1 MERV 13 Pleated AC Furnace Air Filters by Glasfloss Industries. 6 Pack $65.95
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current price $65.9518X18X1 MERV 13 Pleated AC Furnace Air Filters by Glasfloss Industries. 6 Pack
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