Product review (5 stars): Trivial install, much cheaper than a repairman.
Replaced my burnt-out defrost heater. Product arrived in the original GE box. Installed easily, works as it is supposed to. This unit has the defrost switch and harness attached, so there is literally no fiddling around with splices or such, just unplug the old one and plug this in. Whole repair cost less than 1/3 what it did to have a repairman do it the last time.

There seems to be some confusion in general about which heater you get. My unit originally had a single tube defroster, which GE has deprecated in favor of a 2-tube unit that fits in its place. I actually thought I was getting the 2-tube, but instead got the original 1-tube. Easier for me, but the 2-tube might last longer. GE supposedly changed units so the energy density in the tubes would be lower, for longer life.