Product review (1 stars): Physical shape has changed and it no longer works as a replacement for a Whirlpool 4396841.
I've ordered four of this exact same product on subscription. The latest one I received in December 2017. It is physically different from the previous orders. It is not a good replacement for Whirlpool 4396841 for Whirlpool Refrigerator Model ED5VHEXVQ01. I can't push it into my refrigerator far enough for it to "click" into place because of the taper at the end. See the photos to see the problem. I've scheduled a replacement and return. If the replacement product is the same, I'll return them both and order a different brand
Update, 12/24/2017. I received the replacement filter. The packaging and labeling was EXACTLY the same, but the filter fit into my refrigerator, there was no taper. However, I flushed over four gallons through it, pursuant to the instructions, and tested the filtered water with a Total Dissolved Solids (TDS) meter. Store "Distilled Water" tested at 73ppm, tap water was 279ppm, filtered water was 280ppm (no evidence of any actual filtration), and cold coffee was 1012 ppm. I could not taste any difference between tap and filtered water, my wife, in a blind test, definitely preferred the filtered water. I will stop the subscription and buy a cheaper filter that will probably actually filter stuff from the water.