Soffit vents exterior,Vent cover, For Fan, Roof Ventilation High Exhaust Efficiency Roof, Weather Roof Vent Exhaust Fan Ventilator Hood, Rotating Chimney Exhaust Cap Flue(400mm 15.7in)

♥ Turbines ventilator: uses the convection theory between natural wind and air to accelerate and convert any parallel airflow into vertical airflow to improve indoor ventilation. ♥ Stainless steel material: The roof turbines vent is made of thickened 304 stainless steel material, which will not is strong . Suitable for use in harsh conditions. ♥ Suitable for machine shops, farms, restaurants, residences, roof chimneys, improving indoor air environment and accelerating circulation ventilation ♥ Silent: The roof ventilator uses natural wind power to makes it rotate, working continuously and silently. Suitable for residential or light commercial use. Wall mount air vent-- the specially designed air vent prevents rain and excessive wind from entering the ventilation system.