Quick and simple replacement in my refrigerator. Things to note: 1. The instructions say to 'prime' it by running at least 1.5G thru it to clear any items from the water. I found this way too minimal a quantity. I ran at least 3.5G to get rid of what I could very easily see in the water. 2. You'll hear some weird noises during that 'prime' time, almost like air or straining. It's ok, it ends. 3. Water tastes great. Most simple water filter replacement that I've had yet.