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21x21x2 Air Filters

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$15.63 Price Per Filter

Product Description

Filter Size: 21x21x2

Actual Size: 20.5x20.5x2

Actual Size Fraction : 20.5x20.5x2

21x21x2 Air Filters

21x21x2 Air Filters

$15.63 Price Per Filter
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Choose the Right MERV for your AC and Furnace Air Filter

As important as the right size is the appropriate MERV for your health needs and HVAC equipment capacity.

Here is an easy chart with the airborne pollutants filtered by MERV 8, 11, and 13 air filters. If you need more in-depth information about what the best MERV rating is for your household or business, our MERV Rating Explained guide has all the answers.