Product review (2 stars): No Comparison to PUR UKF-8001
On first examination these filters appear well made and they do fit the same socket as the PUR filter. However, they don't filter out bad flavors and chemicals anywhere near as effectively as the PUR filter. Your first clue to the difference in function will be the need to flush the Swift Green filter for at least two gallons before the fine charcoal residue quits flowing out; your second clue comes after you take your first sip. I bought three of these filters to replace the PUR filter in my new Maytag refridgerator but after trying two of them for a week, I gave up and went back to the original PUR filter for a higher price. We have some chemical flavor in our city water that is offensive and the Swift Green filter did not filter it out. When I switched back to a PUR filter, the flavor cleared up immediately.