Wednesday, December 31, 2014

ELI5: Why are filters so expensive? explainlikeimfive


Refrigerator water filters, air filters, mask filters, car filters, oil filters. From what I've seen of them they are just paper-like material with a unique design to help filter why are they anywhere from $30-hundreds of dollars.







Submitted December 31, 2014 at 11:44PM by Flaminglacier http://ift.tt/1BihjgO explainlikeimfive

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