The defogger works great. I added plugs and plugged them into recessed outlets that were installed in the remodel. They are in the same circuit as the exhaust fan, so the mirrors start heating when the fan turned on as soon as I enter the shower. I was nervous applying them to the back of the mirrors as the instructions said not to do any trimming, but realized that the excess could be trimmed off safely. The instructions should have pointed out that the oval ones might need to have the excess unnecessary adhesive material (without the wires) trimmed to conform to the mirror's shape unlike the adhesive backing which was not rectangular.
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