Greenheck says its Model SP ceiling exhaust fans now exceed Energy Star® 4.0 requirements providing increased airflow with decreased power consumption and sound. Compact in size, Model SP ceiling exhaust fans are designed for the lowest possible sound levels and offer a wide range of performance making them ideal for multi-family housing, hotels, hospitals, schools, storage rooms, and bathroom ventilation applications. All SP fan models are licensed to bear the AMCA Seal for Sound and Air Performance and are UL/cUL Listed.