Product review (2 stars): The filter does seem to fit right. sort of
The filter does look a bit different from the original 4396508 that I was using but I was able to install it. My refrigerator is a Kenmore (actually a Whirlpool) side by side 106.53332300 (purchased back in 2003). I was concerned about reviews regarding this filter not working so I wrote to the company and I will include their response to me in my review. I've attached a photo of what the manufacturer info says on my filter package and as you will see from the response from Whirlpool, the filters made by 3M may be an issue for older refrigerators.
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Thank you for contacting Whirlpool Consumer Direct Sales through our website.
I am happy to assist you with your water filter questions.
You are correct. Your replacement water filter is EDR5RXD1. That being said, we have noticed that older model refrigerators in the 8-10 year old range or older have had some issues with one of our newer filter. We do have two manufactures for this filter and with these models we have noticed that one will work and the other will be very difficult to install. It is possible but very difficult. Our engineers are working on a solution to this issue.
If you order directly from us, our warehouse will ship what they have in stock and we have no control over which one they ship. If you are purchasing your filter at the store you can differentiate which one you are purchasing. On the bottom left side of the box you will see where it says "manufactured for Whirlpool" then it will say by.. and it will either say Kemflo or 3M for the manufacturer. If you look at the old filter you have been using you will either see it is flat at the top or has cut out notches in the top. One of these two filters will match the one that you have been using. I believe it is the one made by Kemflo that is working with the older models.
We do have a 30 day return policy and a 90 day warranty so if you do order by phone and get one that doesn't work we would replace it for you. As of right now we just have no way to know which one the warehouse will be shipping. We hope to have a better solution for you soon. I do apologize for the inconvenience.
Thank you for your email. Have a great day.
If you have any additional questions or concerns, you may also reach our retail parts department at 1-800-901-2042 and choose the water filters option. Our hours of operation are Monday through Friday 8:00 a.m.to 8:00 p.m. Eastern Time.
You are a valued Whirlpool customer and we appreciate your support of the Whirlpool Brand. Thank you for allowing us the opportunity to assist you today. Have a good day!
Sincerely,
Billie P.
Whirlpool Consumer Direct Sales

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The reason I gave 4 stars instead of 5 is because I find it very upsetting that there is this manufacturing issue where if you order the filter on any online source even through Whirlpool you can't know if it will fit until you get it!. With the original filter I never had to worry about that because it always worked. I sincerely hope Whirlpool will take this seriously and solve this engineering issue soon.

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New Update, The filter I got from Amazon was the one made in Mexico. Although I was able to install it (it had a rounded top), my refrigerator had small water leaks at the dispenser for the 6 months that it was installed. It was minor or I would have changed the filter sooner but still annoying considering it is supposed to be the correct filter. Now I have the correct filter that I had to spend more money to purchase in town, made by Kemflo that has the notches on top and fits correctly. I downgraded my review to 2 stars because of the problem with having 2 manufacturers that make this same filter different causing fit and use issues.

Basically, you will be taking your chances buying this filter online because you won't know which one you will get..