Product review (5 stars): Fixed my 20 year old side-by-side's cooling problem!
Easy part to install.  If you have an old side-by-side that isn't cooling well anymore, and the freezer side is frozen solid behind the cover, this is what you need, more than likely.  Our original part had a blown heating element at the bottom that was evidenced by it's black/burned out appearance.  We defrosted with a heat gun, installed this, tested it by rolling the defrost timer to cycle the heater on, and now have a freezer at 0F & refrigerator at 33F on a twenty year-old hand me down unit.  We keep drinks in it in the garage.