Tetra 25994 Bio Foam Grid Replacement Kit with Whisper 30/40/60 Power Filter
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<b>[Product Information]</b><br>
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<li>Tetra bio foam grid 30/40/60</li>
<li>Each whisper bio foam kit includes foam and a plastic frame</li>
<li>The bio-foam grid fits the whisper in-tank power filter</li>
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