WEITINGKKK Soffit vents exterior,Vent cover, Non Power Chimney Cowl Attic Air Vent Outlet Ventilating Fan,No Deformation(30cm)

♥ The turbo ventilator adopts the theory of convection between natural wind and air, accelerates and converts any parallel airflow into vertical airflow to improve indoor ventilation ♥ The roof ventilator is made of 304 stainless steel, which is durable,weather-resistant, non-deformable, and has a smooth surface ♥ Various sizes. For chimneys, factory roofs, commercial, ventilation ducts, houses, warehouses, residential buildings, etc. ♥ The ventilation system is strong enough to withstand 200km/h wind speed and 100kg load without deformation or damage. Wall mount air vent-- the specially designed air vent prevents rain and excessive wind from entering the ventilation system.