Industrial Scientific Rotating Roofing Wind Turbine, Stainless Steel Turbine Ventilator Vents Cap for Energy Saving Dryer Exhaust Hood

Stianless steel air vent capConstruction:☑ Frame & inner louver:: High quality strong stainless.☑ Size:100mm, 150mm, 200mm, 300mmDescription:☑ The frame & blades are high quality strong 304 stainless steel construction with advantages of corrosion resistance and rigidity.☑ This type of air vent is incorporated with a set of louver blades. It is is commonly used as exhausted outlet and ventilation on the exterior walls of washrooms, kitchens, warehouses, houses,apartments, condominiums, gymnasiums...ect.☑ There are inverted spring hooks located on the neck , which are used to secure the device onto the wall or duct.☑ There is air filter inserted.

• NO NOISE & RAIN PROOF: Roof vent fan has no noise during spinning.
• 304 STAINLESS STEEL: The roof turbine vent made up of thickened stainless steel material which will not rust, sturdy and durable. Also easy to clean.
• POWER-FREE ROOF VENT: The turbine ventilator applies the theory of convection between natural wind and air to accelerate and transform any parallel airflow into vertical so as to improve the indoor ventilation.
• NO ASSEMBLY NEEDED: External installation provides more freedom.
• WIDE APPLICATION: With high sensitivity for all-day operation, this turbine vent is widely used in the ventilation of large plants, warehouses, stadiums, animal farms, high-rise buildings and residential buildings etc.