WhisperCeiling 80 CFM Ceiling Mounted Fan: * Power consumption (watts): 14.7 at 80 CFM and 14.5 at 62 CFM * 80 CFM Panasonic Ceiling Mounted Fan Speed (RPM): 829 at 80 CFM and 1089 at 62 CFM * Current (amps): 0.12 at 80 CFM and 0.12 at 62 CFM * Panasonic Whisper Bathroom Fan Duct diameter: 4" * Mounting opening: 10-1/2 sq in * Grille size: 13 sq in * Dimensions: 10.83"H x 14.17"W x 16.73"D * Weight: 10.36 lbs ENERGY STAR® Products that are ENERGY STAR-qualified prevent greenhouse gas emissions by meeting strict energy efficiency guidelines set by the U.S. Environmental Protection Agency and the U.S. Department of Energy. The ENERGY STAR name and marks are registered marks owned by the U.S. government, as part of their energy efficiency and environmental activities.