Roof Wind Turbines Vents, Galvanized Turbines Internally Braced Wind Turbines, 4 10 12 Inch Easy to Install Unpowered Rotation Rainproof Ventilator Chimney Cap for Houses Factory Attic Farm

Stainless steel rotor, chimney rotating cover, antissinking chimney cover, rotating cover ventilation, no power energy saving, turbines ventilationFeatures: zero consumption, zero noise, rainproof, weatherproof and rustproof, 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-quality stainless steel】The roof wind smoke exhauster is made of high-quality 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
• 【Variable-angle neck tube design】 The fan can be installed on a 0-22.5-degree slope as you like, flat or inclined. easy to install
• 【Galvanized Roller】Strength enough to withstand 200km/h wind speed, 100KG load without deformation or damage.
• 【Application scenario】Suitable for chimneys, farms, factory roofs, ventilation ducts, houses, warehouses, etc.
• 【Arc-shaped wind blades】 can ensure that rainwater will never intrude under working conditions. High air exhaust efficiency, light operation to prevents rainwater intrusion