Roof Wind Turbines Cap Vent Rotating Roof Vents, 4 8 10In Stainless Steel Exhaust Cap Roof Flue Vent, Roof Ventilator Round Automatic Working, for Kitchen, Canteen Ventilation, Commercial

Roof Wind Turbines Cap Vent Round Internally Braced Wind Turbines, 304 Stainless Steel Roof Ventilator Air Outlet, 4 10 12 Inch, Easy to Install Unpowered Rotation Rainproof Ventilator Material: 304 stainless steel Advantages: discharge indoor hot air and dirty air, purify the indoor environment Principles: Utilize natural wind and indoor temperature difference, air -to -flow drives turbines rotation. Eliminates the old air in the room with centrifugal force and negative pressure. Application: For the ventilation of exterior walls such as bathrooms, kitchens, warehouses, residences, apartments, etc. packing list: 1* No dynamic ventilated port 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 350mm (13.8 inches) ventilation cap×1, fixed foot×4 400mm (15.7 inches) ventilation cap×1, fixed foot×4 If you have any questions about the product, please feel free to contact us, our professional customer service team will answer your doubts

• 【Material】 The roof turbines vent is made of thickened stainless steel material, which is rainproof, rustproof, high hardness, , energy-saving, environmentally friendly, and easy to clean.
• 【Use】Suitable for use on chimneys, farms, factory roofs, ventilation ducts, residential flues, vent pipe/hose warehouses, bathroom vents and extractors, air conditioning units, kitchen fans and vents.
• 【Unpowered Chimney Cap】The rotating chimney cap uses natural wind and air heat convection caused by the temperature difference between indoor and outdoor to drive the turbines to rotate and discharge indoor dirty air.
• 【Noiseless Rainproof】The roof ventilation turbines makes no noise during rotation. The encrypted blade gaps are small enough to prevents rainwater from entering the ventilation system. It also prevents debris from entering.
• 【Easy to Install】The fan can be installed on a slope of 0-22.5 degrees, flat or inclined. High exhaust efficiency