Product review (2 stars): Defective?
Not sure if I received a defective one or what, but the water slowed to a trickle a few months after installation. I change these every six months and this was my first problem, it lasted only three. The packing seemed old?  Bought a new one at Loews and it restored water flow. I'm heard more about knock offs and defective items being sold on Amazon, not by Amazon but other sellers. Maybe this was the case here?  No way to be certain, but you have to wonder.