Ceiling fans for learning studios shall be ceiling slab mounted/hung with three plastic blades, 60 in diameter minimum size. Units shall be with direct drive three-speed motor and be Energy Star listed, suitable to operate with 120 volts, 1 phase electric service. 5 Speed control shall be wall mounting type. CFM per watt airflow efficiency performance shall be: 1) low speed minimum airflow of 1250 CFM with an efficiency of 155 CFM/watt; 2) high speed minimum airflow of 5000 CFM with an efficiency of 75 CFM/watt. Warranty shall be minimum 30- year on motor and one-year on component(s). Sound level rating at maximum speed shall not exceed NC sound criteria of 40 sones.
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