Product review (5 stars): Worked on my 2001 Kenmore Refrigerator
I was skeptical that this would work, since I have an older (2001) Kenmore fridge in the garage.  To my surprise, it fit as expected and installed very easily.  The package didn't come with any installation instructions, but I found a good walk-through on YouTube.  Just search "garage refrigerator heater kit" and you'll find out how to install it.  It should only take about 10 minutes.

Bottom-line:  If your garage gets really cold in the winter and your freezer doesn't work properly, you'll need this.  Highly recommend!