Attic Air Vent Ventilating Fan Outside Dryer Vent Covers for House Large 5 7 8 10 12 16 20 Inch, Round Air Turbine Vent Rain Cover for Chimney/Shed Roof, Industrial Rotating Roofing Ventilator(500mm/1

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 to effectively remove indoor soot, smoke, odor, moisture, heat, decorative harmful gas, and dust etc.Specifications:Material: Stainless SteelDia 110-250mm(4.3-9.8 in) - Suitable for pipe installation( with Clamp)Dia 300mm(11.8 in) and 400mm (15.7 in) - Chimney horizontal installation( with L stand)Dia 500mm(19.6 in)- Adjustable angle. Suitable for roof installation( with Blue metal base)Features: Zero consumption, zero noise, rainproof, anti-rust, high hardness and long service life.Ensure Air Circulation: Provides maximum protection without hindering the performance of the chimney.It is strong enough to withstand 200km/h wind speed and 100KG load without damage and deformation.Package Content: 1× Roof TurbineOur ServicesAll enquiries will be valued and replied within 24 hours.Our Inspection Department will test each batch of product to ensure the quality, including material test and performance test.

• 【Stainless Steel】The roof turbine vent made up of thickened stainless steel material which will not rust, waterproof and durable. Also easy to clean.
• 【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.
• 【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.
• 【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.
• 【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.