Product review (5 stars): Fit perfectly, no more smelly water, flow increased.
Fit perfectly in our Whirlpool. You have to keep the cap that is on your old filter so don't toss it, you move it over to the new one when you install it.

I have a Thermos water bottle that I keep my water in every day, and on my bedside to drink out of. After sitting over night, I could always smell something when I opened my bottle to rinse it out and refill it. I noticed this did not happen when I filled it at work out of the super-duper reverse osmosis water cooler there. Since changing the filter in the fridge, I no longer ever smell anything when I open my Thermos to rinse and refill it. The flow rate is much higher now as well.