the fan frame and fan blades are made of UL94V-0 thermoplastic material, safe and flame retardant. With powerful performance, it has a wide range of operating voltage, such as 115V or 230V, ball or oil bearing, speed up to 2,500-3,500rpm, and airflow up to 48.7CFM, it can efficiently dissipate heat and ventilate, and is suitable for a wide range of equipments with heat dissipation needs.