Roof Wind Turbines Cap Vent Roof Ventilator 304 Stainless Steel Wind Turbines, 8Inch 10Inch 12Inch Air Vent Outlet Rotating Roof Vents, NoRusts, No Deformation, All Purpose Chimney Cowls

The chimney hood installed on the chimney mouth of the roof does not generate any energy, but is driven by the wind and can rotate easily. The strongers the wind, the faster the rotation, and the faster the air circulation is promoted.Features: zeroconsumption, zeronoise, rainproofs, weatherproofs and rustproofs, high speed, high hardness, long service life, prevents pipes from being clogged by nests and debrisName: house chimney vent capMaterial: 304 stainless steel (galvanized inside)Function: ventilation, exhaust, ventilation, heat dissipationsize:110 mm (4.3 inches)150 mm (5.9 inches)200 mm (7.9 in)250mm (9.8")300mm (11.8")350mm (13.8")400mm (15.7 inches)Package:Vent hood x 1Accessories: (110-250mm: 1 clamp, 300mm: 3 fixed feet, 350-400mm: 4 fixed feet)If you have any questions about the product, please feel free to contact us, our professional customer service team will answer your doubts

• 【High-qualitys stainless steel】The roof wind smokeexhauster is made of highsquality 304 stainless steel, which is integrally formed without deformation, with a smooth surface and no sharp angles. The curved fan blades have smaller wind resistance and smoother rotation
• 【Galvanized Roller】Strength enough to withstand 200km/h wind speed, 100KG load without deformation or damages.
• 【Variable-angle neck tube design】 The fan can be installed on a 0-22.5-degree slope as you like, flat or inclined. easysto install
• 【Arc-shaped wind blades】 can ensure that rainwater will never intrude under working conditions. High air exhaust efficiency, light operation to prevents rainwater intrusion
• 【Application scenario】Suitable for chimneys, farms, factory roofs, ventilation ducts, houses, warehouses, etc.