Product review (1 stars): 2 out of 3 fail to function - don't waste your money.
We had a package of 3 filters - 2 of them did not function. We've purchased better "brand name" filters and not had any problems. With these it was a waste of money as only one worked. Of course because it takes a while to need a filter change, you can't return them, so we're out of luck. A big waste of money!