Rotating Wind Turbines Roof Vents, Stainless Steel 304 Roof Ventilator, 4 Inch 8 Inch 10 Inch 12 Inch Air Vent Outlet, Chimney Cowl Attic Air Vent Outlet Ventilating Fan

Material: 304 stainless steel (internal plating) Advantages: discharge indoor hot air and dirty air, purify the indoor environment Application: For the ventilation of exterior walls such as bathrooms, kitchens, warehouses, residences, apartments, etc. Zero consumption:Using natural wind and air-heat convection caused by the temperature difference between indoor and outdoor to drive the turbine to rotate, In this way, centrifugal force and negative pressure are used to discharge the stale air in the room. Size - The package includes: 110mm (4.3 inches) ventilation cap×1, clamp×1 160mm (6.3 inches) ventilation cap×1, clamp×1 200mm (7.9 inches) ventilation cap×1, clamp×1 250mm (9.8 inches) ventilation cap×1, clamp×1 300mm (11.8 inches) ventilation cap×1, fixed foot×3 400mm (15.7 inches) ventilation cap×1, fixed foot×4 Package Contents: 1*Stainless steel top cover (with accessories)

• 【Material】Made of high-quality 304 thick stainless steel, galvanized support frame, high-quality ball bearings.
• 【Operation principle】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 discharge.
• 【No Noise & RainproofRoof vent turbine has no noise during . Encrypted blade clearance is small enough to prevent rain from entering the ventilation system.
• 【Easy to Install】It allows the ventilator to be installed at will under 0- 22.5 degree slope, making the installation project very easy.
• 【Application】For chimneys, farms, factory roofs, commercial, ventilation ducts, houses, warehouses, residential buildings, etc.