Find NuTone QTREN & QTXN ultra quiet bathroom fans at discount prices here. These ultra quiet exhaust fans have sound levels as low as .3 sones. UL listed for use over tub/shower with GFCI circuits. Gracefully curved grills with less than 5/8" projection from the ceiling. Choose from a full range of ultra quiet vent fans for rooms from 75 square feet to 375 square feet.