12″ Aluminum Shutter Exhaust Fan – 1620 RPM, 940 CFM, High-Speed, Silver, 1 Pack
Rotating Speed：1620 RPM. This fan features aluminium blades, automatic shutters that open and close in tandem with the operation of the fan. RUST PROOF ALUMINUM SHUTTERS: This shutter fan is made with corrosion resistant aluminium shutters and blades.