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4" Air Filters
13 products
Freshen the air in your home or office with our 4 inch air filters. With standard, hard-to-find, and custom sizes available, we know you'll find exactly what you need to improve your air quality. As you increase the MERV rating of your 4 inch furnace filter, the filtration efficiency also increases. Choose the rating that is right for you and best accommodates your individual needs or preferences.
Our 4 inch filters offer the following features:
Our 4 inch filters offer the following features:
- A Variety of Sizes, Including Standard 14x4 Air Filters & Custom Options
- Superior, Made-in-the-USA Quality
- Lower Price than You'll Find Anywhere Else
- 4 MERV Ratings for Enhanced Filtration Efficiency
- 4" Air Filters That Can Reduce Your Energy Costs By Up To 15%
Showing 1 - 13 of 13 products
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14 x 25 x 4" Filter
$18.03

16 x 16 x 4" Filter
$20.06

20 x 25 x 4" Filter
From $5.83

25 x 25 x 4" Filter
$39.71

20 x 24 x 4" Filter
From $5.09

12 x 24 x 4" Filter
From $5.55

16 x 24 x 4" Filter
From $17.49

16 x 20 x 4" Filter
From $4.52

16 x 25 x 4" Filter
From $4.94

18 x 24 x 4" Filter
From $4.82

20 x 20 x 4" Filter
From $4.97

20 x 30 x 4" Filter
$31.79

24 x 24 x 4" Filter
From $5.83
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