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. WhisperLine 340 CFM In-Line Fan: * Ventilate multiple areas with just 1 fan * Whisper Ceiling Fan is so quiet you might not know it"s on * Adjustable airflow for multi-inlet balance * Easy installation * Continuous, trouble-free operation for many years * Power consumption: 98-watts * Speed (RPM): 1337 * Duct diameter: 6" * Low profile family design grille * Whisper Ceiling Fan weight: 24 lbs