This is a High Quality Aftermarket Parts The Product Suitable For: MULTIPURPOSE: This shutter exhaust fan is designed to help remove excess heat and moisture, keeps your living space cooler and more comfortable year-round. Widely use in home attic, workshops, welding rooms, factories, warehouses, barns, and greenhouses. AUTOMATIC ALUMINUM SHUTTERS: This wall mounted exhaust fan includes automatic gravity shutters that open and close with the operation of the fan. Protecting your shutter fan from rain and others when not in operation. POWERFUL AIRFLOW: Ventilation exhaust fan runs 1590 rpm with an airflow of 1950 CFM on high. Produces stronger and more powerful airflow .
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