Product review (4 stars): Doesn't fit a Magic Chef fridge, but was able to make it work
Didn't do enough research when buying this, but it worked anyway.  I have a Magic Chef fridge in the garage that we had issues with last winter when the temperature dropped below 45 in the garage.  This part doesn't quite fit the Magic Chef, but cheap refrigerators are pretty similar across brands and I was able to install the part appropriately and it appears to be keeping the freezer at 0-10F.  Still haven't had a real cold spell yet will update if this changes.