SBCC 201 Stainless Steel Unpowered Fan for Ventilation, Waterproof and Rainproof, Roof Flue Ventilation Ball (Small : 400mm)

Name: Ventilation hoodMaterial: 201Air outlet diameter: 200/300/400/500/600mmScope of application: hotels, hospitals, schools, factories, etc.Function: waterproof and rainproof, ventilated

• Unpowered roof vents: Use natural wind and air convection to convert parallel airflow into vertical airflow to improve indoor ventilation.
• Material: The roof range hood is made of 201 stainless steel, which is thick and hard. It will not deform even if it bears a weight of 100 kilograms.
• Rainproof: The galvanized roller is strong enough to withstand wind speeds of 200 km/h and a load of 100 kg without deformation or damage.
• Wide range of applications: Suitable for large factories, warehouses, stadiums, animal farms, high-rise buildings, greenhouses, residential buildings, covered patios, wet rooms and closed or rarely used rooms or spaces to provide ventilation throughout the day.
• No need for electricity and maintenance, no need for electricity, automatic ventilation all day long, no need for maintenance, no worries such as short circuit of wires.