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 we developed the QTRE 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. Grille dimensions: Length: 13 in. - Width: 14 in.