Product review (5 stars): Fits perfectly, works great!
Obviously I have no way of testing the water to see if it meets the standards that it claims to filter the water. But it fits perfectly, is easy to install, and works great. Pretty much all you can hope for in a water filter for your fridge, and you trust the rest of it is accurate.

I will say that I haven't noticed any smells or odors from the water, so it seems like it is definitely filtering out some of the chemical smell that we get when they clean out the water mains from time to time.

I'm very happy with the Waterdrop NSF 53&42 Refrigerator Water Filter and the price is much better than the factory brand name.