These are really good filters. My last 9 months or more (still no reduction). They don't have surface loading like corrugated ones. and they have a finer filter performance. We use the CoOp water system, our water comes from Cypress Springs Lake in East Texas and there is some sand and algae in our water, these filters remove it and last a long time. I will not buy pleated filters again as they are much better. In the attached photo after 9 months of use and a new filter still in the box. I replaced this filter because I was concerned about how long it would last, not because of the reduced water usage.
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