Tech Drive VeryQuiet 70 CFM 20 Sone Bathroom Ventilation and Exhaust Fan 70CFM

Quiet bathroom fan (2.0 sones) and Strong air movement (70CFM) for bathroom up to 75 Sq. Ft, 7.5in x 7.25in x 4in with 3in duct. Ceiling Mounting Opening: 7.6in x 7.3in. Note: Use 3inch ducting., Easy-to-Install: No cut housing installation and replaces most small bathroom standard fans(As: Housing Size 7.5in x 7.25in) using existing ceiling opening ., Energy Star qualified, UL and HVI certified for performance assurance.Acceptable for use over a bathtub or shower when installed in a GFCI-protected branch circuit., Efficient and quiet,excellent motor perfomance, working at least 25000 hours.Galvanized steel Housing resists corrosion,