Broan 100HFL Directionally-Adjustable Bath Fan with Heater and Fluorescent Light N/A Imported 4-Inch ducting for new construction or retrofit Heater, Fan and Light brings convenient, comforting warmth to your bathroom Quiet operation at 2.0-Sone, 100 CFM ventilation fan 27-Watt fluorescent lighting HVI certified, type IC, requires a dedicated 20-Amp circuit. Fits 2-Inch by 6-Inch construction