Panasonic FV-15VQL5 WhisperLite 150 CFM Ceiling Mounted Fan/Light Combination, White Rated at 0.25-Inch water gauge for performance measurement for ASHRAE, Energy Star, LEED for homes, and HVI Totally enclosed condenser motor and double-tapered, dolphin shaped bladed blower wheel quietly moves air Inuous, trouble-free operation for many years due to high-quality components and permanently lubricated motors Built-in damper to prevent back draft Rated 150 cubic feet per minute