4 Replacement Carbon Booster Filter For Holmes Total Air Purifier Aer1 Series HAP242-NUC,
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<b>[Product Information]</b><br>
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<li>Premium carbon pre filter absorbs and eliminates any household unfavorable odor</li>
<li>For use with Holmes air purifier models: HAP2400, HAP242, HAP412, HAP422, HAP424, HAP1200, HAP706 or HAP716</li>
<li>Also works on Bionaire purifier models BAP260, BAP815, BAP825, BAP1412, BAP1502, BAP1525, BAP1700 and BAP8500</li>
<li>Cannot be used independent of the main purifier filter. A pack of 4 pre filters included. Directly apply to the Aer1 filter</li>
<li>9.5" (L) x 4" (W)</li>
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