AllergyZone AZ16201 Air Filter for Allergy Sufferers, 16 x 20 x 1"
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<b>[Product Information]</b><br>
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<li>Proven effective in a clinical trial</li>
<li>Lasts up to 90 days between filter changes</li>
<li>Designed and recommended by leading allergy and asthma doctors for symptom relief</li>
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