BOHHO Rotating Chimney Cover Cap, Wind Turbine Ventilator, 304 Stainless Steel Exhaust Cap, Outdoor Vent, Zero Consumption, Ducting External Extractor, for Factories, Farms, Chimney,110mm/4.3Inch

There are many types of chimney hoods in our store, and many sizes, if you can't find the size you want in the list, please email me and I will help you out. Working 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 discharged. Installation: The hood is equipped with two installation accessories, a clamp and a 90° fixed foot. Small sizes can be installed with clamps to prevent gaps, and large sizes can be fixed with 90° fixed feet. Ventilator Material: Made of 304 thick stainless steel, galvanized support frame, and high-quality ball bearings. Turbine features: zero consumption, zero noise, rainproof, anti-rust, high hardness, anti-corrosion, and long service life.