This replacement for the QT80 series will do the trick. I ordered it and received it within days and the contractor doing some minor work on my house was able to lower the vent cover, unplug the old unit and plug in the new one in less than half an hour. Of course, before ordering, we carefully wrote down the model number on the old device. I also strongly recommend buying the whole unit with the fan, not just the motor which is cheaper. Old fans get so gross you just want a new one.
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