Nutones energy efficient solutions in traditional designs. A bath fan needn’t call attention to itself, especially when you don’t want it to overpower the design of your bath or powder room. More important, it shouldn’t call attention to itself on your electric bill. So Nutone developed the QTREN line for energy efficiency in the high-traffic bathroom, and for those who seek a fan with a more traditional design. It simply does its job quietly, in every sense of the word. UL Listed for use over bathtubs and showers when connected to a GFCI protected branch circuit.