I bought this filter to replace the Culligan RC-EZ-4 rinse water filter because it was about half the price. I can't tell any difference in the taste of the water from this filter compared to Culligan brand filters. As a precaution, I have not tested the water from one filter against the other, nor have I cut them apart to compare the filters, but I cannot tell the difference. It installs and fits just like a Culligan filter and the water tastes great.
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