12 Inch Round Rotating Roof Vent - Stainless Steel Exhaust Cap for Roof Flue Ventilation with Wind Turbine Cap, Easy to Install Rotation - CapVent

Roof VentilatorZero Consumption:Utilizing natural wind and air-heat convection caused by the temperature difference between indoor and outdoor environments, this roof ventilator is designed to drive the turbine to rotate. Through the use of centrifugal force and negative pressure, the stale air in the room is effectively discharged.Material: Made from high-quality 304 stainless steelSize Options: - Diameter 100mm/4in- Diameter 150mm/6in- Diameter 200mm/8in- Diameter 300mm/12in- Diameter 350mm/13.8in- Diameter 400mm/15.8in- Diameter 450mm/17.8in- Diameter 500mm/19.6in- Diameter 600mm/23.6inPlease note that the mounting nozzle is slightly smaller than the vent pipe for easy installation. Refer to the dimensional drawings provided to ensure you select the correct size for your needs.Note: - Product measurements may have a slight error of 2-3cm due to manual measurement.- The color of the item may vary slightly from the picture due to differences in light and screen settings.

• Material: Made of high-quality 304 thick stainless steel, galvanized support frame, high-quality ball bearings
• Features: zero consumption, zero noise, rainproof, rustproof, high hardness, corrosion resistance and long service life.
• Working principle: Using natural wind and air thermal convection caused by the difference between indoor and outdoor temperature, the turbine is driven to rotate, and the stale indoor air is discharged.
• Installation: The hood is equipped with two types of installation accessories, a clamp and a 90° fixed foot. Small sizes can be installed with clamps to prevent gaps, and large sizes can be fixed with 90° fixed feet.
• Application: Suitable for ventilation ducts, chimneys, farms, factory roofs, warehouses, etc.