
NOTE: I ordered four packs of these premium carbon filters. I received only one pack of premium filters (pleated) and three packs of cheaper regular activated carbon filters which are not suitable for my application. My well water has tiny <5 micron rust particles that only premium filters remove completely, so the difference in performance is huge. Instead I will try to order the ecopure brand to see if my order will be filled without these ineffective substitutes.

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