20" Big Blue 1 MICRON Whole House Water Filter 4.5" x 20" by CFS pack of 2
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<b>[Product Information]</b><br>
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<li>Melt-Blown Polypropylene 4-layer graded density with a 1 micron nominal filtration rating</li>
<li>Universal replacement for all 4.5" x 20" Big Blue filter cartridges</li>
<li>Pair of 2 filter, individually wrapped</li>
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