304 Stainless Steel Non Power Roof Ventilator 4in/6in/8in/10in/12in /16in Air Vent Outlet - Turbines Vent Cap No Noise Rotation by Wind/air - Easy to Install Roofing Wind Cap Cover, for Houses Factory

---> This Roof Ventilator is a dependable rotary that works automatically, continuously and silently without operating or maintenance costs.---> Rotating hood for ventilation pipes, smoke chimneys, and air extraction.The gairing provides maximum protection without hindering the performance of the chimney.---> Product Specifications- Material: 304 Stainless steel- Color: Silver- Shape: Round- Connect size: 110mm/4.3 in , 160mm/6.3 in , 200mm/7.9 in , 250mm/9.8 in , 300mm/11.8 inStainless steel turbines fits any roof. Ideal for residential or light commercial use.---> Brand new upgrade, major features1. Variable Angle Design - It can make the fan easy to install under 0-22.5° slant.2. Smooth Surface - Smooth appearance and unique designwhich is very popular.3. Curved Blade - It can ensure that the rain will not be immersed in the working state, high exhaust efficiency.4. Internal Components - Double filtration capacity and low resistance. Filter rate ≥95%, Light mask, Safe & carefree.5. Galvanized Bearing - The wind speed intensity is higher. The load is stronger, it's not easy to be damaged or deformed6. Power & Maintenance Free - Automatic exhaust all day without electricity,it can reduce the fire and other troubles causedby short circuit or voltage overload.7. Noiseless & Durable - There is no noise when the fan is running, and the core of the fan is fully enclosed bearing, The blade base is made of stainless steel, which is anti-aging and long service life.---> Package List1 x Roof Turbine (Including all installation accessories.)---> Important Hint!!! For better waterproofness, it is finally recommended to seal the outer gap between the turbine neck and the base with silicone, and clean the roof after installation.---> Please Note:1. Items may slightly differ from photo in terms of color due to the lig

• 【Rotary Chimney Cap】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.
• 【Stainless Steel】The roof turbine vent made up of thickened stainless steel material which will not rust, waterproof and durable. Also easy to clean.
• 【No Noise & RainproofRoof vent turbine has no noise during spinning. Encrypted blade clearance is small enough to prevent rain from entering the ventilation system. Also keeps out birds and rodents.
• 【Easy to Install】The turbine vent is no need to assemble, you just take it out and install it where you need it. Including all installation accessories.
• 【Warm Tips】For better waterproofness, it is finally recommended to seal the outer gap between the turbine neck and the base with silicone, and clean the roof after installation.