Empty Refillable Filter Cartridge for 20" Big Blue Housing
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<b>[Product Information]</b><br>
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<li>Empty 20" Big Blue cartridge</li>
<li>Measures 4.5" x 20"</li>
<li>Fill with your own media or combination of medias</li>
<li>Includes filter pads at the top and bottom to prevent media fines from escaping the filter</li>
<li>Actual cartridge may vary in appearance than what is shown</li>
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