Product review (5 stars): Exact duplicate of the original. Two screws, one plug and done.
When I heard the dreaded word that our refrigerator was getting warmer I thought first of the defrost timer which in my experience is prone to failure. Unlike the old days this one is mounted in the refrigerator next to the light rather than the usual spot under the refrigerator where it is exposed to heat and dust. It turned out the timer was OK and the defrost heaters were defective. Since I saved at least $35.00 buying this from Amazon I'm glad to have it as a spare. I will probably need it eventually. I installed the new one and kept the original as a spare. It's working fine. Easy do-it-yourself project. Takes about 5 minutes and saves big bucks over a service call. All you need is a Phillips screw driver. If you have never done it before you should probably unplug the refrigerator while you change the timer.