18x18x1 Air Filter

Keep your indoor air clean and fresh with our high-quality 18x18x1 air filters designed for optimal performance

Product List

Filtrete 18x18x1 MERV 5 Air Filter 6-Pack

Filtrete MERV 5 Air Filters

Filtrete

Product Review Score

4.57 out of 5 stars

75 reviews

$37.90

Arm & Hammer MERV 11 Allergen Air Filters 4-Pack

Arm & Hammer MERV 11 Filters

Product Review Score

4.14 out of 5 stars

100 reviews

$62.36

Nordic Pure MERV 7 Pleated Air Filters - 2 Pack

Nordic Pure MERV 7 Filters

Nordic Pure

Product Review Score

4.72 out of 5 stars

36 reviews

$24.50 $22.44

Color Changing 18x18 Air Filter for Pets

Pet-Friendly Color Changing Filter

Product Review Score

4.82 out of 5 stars

51 reviews

$64.99

GDS Series 18x18x1 Glasfloss Fiberglass Air Filters

GDS Series 18x18 Fiberglass Filters

Glasfloss

Product Review Score

4.5 out of 5 stars

32 reviews

$42.70

18x18 Air Filter, MERV 8, 2 Pack

18x18 MERV 8 Air Filters - 2 Pack

Simply

Product Review Score

4.59 out of 5 stars

166 reviews

$24.60

K&N Washable MERV 8 HVAC Air Filter 18x18x1

K&N Washable Air Filter 18x18

Product Review Score

4.09 out of 5 stars

187 reviews

$58.90 $49.99

18x18x1 MERV 8 Pleated Air Filters (3-Pack)

18"x18" MERV 8 Air Filters 3-Pack

Filterbuy

Product Review Score

4.37 out of 5 stars

201 reviews

$30.57

Glasfloss MERV 10 Air Filters 18x18 - 4 Pack

Glasfloss MERV 10 Filters - 4 Pack

Glasfloss

Product Review Score

4.77 out of 5 stars

162 reviews

$29.98

Aerostar MERV 11 18x18 Air Filter 4-Pack

Aerostar MERV 11 Air Filters

Aerostar

Product Review Score

4.37 out of 5 stars

174 reviews

$44.40

18x18x1 MERV 8 HVAC Air Filters - 4 Pack

MERV 8 Air Filters - 4 Pack

Filter King

Product Review Score

4.7 out of 5 stars

62 reviews

$33.96

18x18 MERV 8 Air Filters with Odor Control (2-Pack)

18x18 MERV 8 Odor Filters

Filterbuy

Product Review Score

4.7 out of 5 stars

223 reviews

$45.30