Product review (4 stars): Works fine but discolors
The filter turned brownish after just a couple of days' use. Never had this happen to the original filter.
It's not any kind of mold or fungus, just a discoloration akin to that of an old newspaper. But the filter is still intact and appears to be working just fine so I'll give it 4 stars instead of the 3 I was going to give.
This seller provided prompt shipping and the items arrived in perfect condition.