Roof Rotating Vents Cap, 304 Stainless Steel Chimney Cowl, Exhaust Wind Turbines Cap Roof Flue Vent, Attic Air Vent Ventilating Fan, Unpowered Rotation, Easy to Install(200mm/7.9in)

Enhance your indoor air quality with the Roof Wind Turbines Cap Vent. Crafted from durable 304 stainless steel, these ventilators are designed to efficiently discharge hot and dirty air from your home, utilizing natural wind and air-heat convection with zero energy consumption.Features:1 weather-resistant curved blade2. Zero energy consumption cover, environmentally friendly and durable3. High speed, low noise, prevents the pipe from being clogged by nests and debrisSpec:Item Type: Roof VentilatorMaterial: 304 Stainless Steel (galvanized inside)Function: ventilation, exhaust, ventilation, heat dissipationSize: Diameter110mm/4.3in , 160mm/6.3in , 200mm/7.9in , 250mm/9.8in , 300mm/11.8in , 350mm/13.8in , 400mm/15.7in , 450mm/17.7in , 500mm/19.7in , 600mm/23.6inPackageList:1 x Roof VentilatorNote:✔ The product is hand-measured, please allow an error of 1-3 cm, please confirm that you do not mind before placing an order.✔ The product is genuine, but due to factors such as shooting angle, light, display parameters, etc., the actual color may be different from the photo, and the actual product shall prevail.

• 304 Stainless Steel Material: Stainless steel material is very strong and resistant to rust. It can also withstand high temperatures and acid, making it suitable for use in harsh conditions.
• Working principle: Use the natural wind and air thermal convection caused by the temperature difference between indoor and outdoor to drive the turbines to rotate and exhaust the stale indoor air.
• No Noise and Rainproof: The roof vent turbines makes no noise during rotation.The encrypted blade clearance is small enough to prevent rainwater from entering the ventilation system.It also deters birds and rodents.
• Versatile Application: Suitable for chimneys, farms, factory roofs, ventilation ducts, houses, warehouses, and more. It is easy to install on slopes from 0 to 22.5 degrees, flat or inclined surfaces.
• 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.