NuVent NXSH110L High Efficiency Quiet Bath Fan with Light, White Low noise levels make it an excellent choice when quiet is a must Contemporary design grillle with distinctive sculpted lines and comes with a light Sturdy 22-gauge steel housing with knockouts on side and top for easy access and installation Extended metal duct collar with integrated backdraft damper for easy 4-inch ducting Large, removable electrical box simplifies wiring and hanger bars included for stronger, secure mounting