Accumulair Diamond MERV 13 Air/Furnace Filters, 20" L x 21" H x 1"W
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<b>[Product Information]</b><br>
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<li>MERV 13 rating</li>
<li>Great for helping reduce airborne allergens such as bacteria</li>
<li>Each filter lasts up to 3 months</li>
<li>Electrostatically charged filter media captures airborne allergens smaller than 1 micron</li>
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