Stainless Steel Revolving Chimney Cowl - 150mm Rotating Spinner Vent Cap for Anti-Downdraught Protection - Durable Chimney & Exhaust Vent Cover with Fixed Feet - Perfect for Roof Vents, Fireplace Flues & Outdoor Exhaust Systems

Function: High precision, high speed, rainproof, efficient exhaustPrinciple: Using natural wind and air thermal convection caused by the temperature difference between indoor and outdoor to push the turbine to rotate, so as to use centrifugal force and negative pressure to expel stale indoor air.Name: Chimney CoverMaterial: 304 stainless steelSpecification: diameter 300mm-450mm (please refer to the picture for details)Function: rainproof and dustproof, prevent mosquitoes from enteringUse scenarios: industrial plants, farms, residential flues, etc.Power: wind drivenAir volume: Air volume depends on windSmart type: not supportedIntelligent control: NoNote:1. Due to manual measurement, please allow a deviation of 1-5mm. Thank you!2. After receiving the goods, pay attention to the edge of the hat is very sharp, please wear gloves to install, so as not to hurt your hand![Tips]: If you have any questions, you can contact us by email, and we will solve it for you within 24 hours.

PREVENTS DOWNDRAUGHT - the rings of this chimney cowl are specially designed and placed one over the other in a way that the wind cannot go down the chinmey, thus making this cap a prefect anti downdraught solution. This pot will not allow the fumes go down and enter your room.

IMPROVES COMBUSTION - by not allowing the fumes go too fast out of the chimney this flue cover creates an even combustion of the burning material thus not only saving you money and fuel but also keeping the warmth longer inside.

EXTENDED LIFESPAN - due to its stainless steel construction this chimney top cover will last longer than regular steel pots. The lack of moving parts will increase its life and serviceability.

BIRD GUARD and RAIN PROTECTOR - the distance between the rings is small enough for birds to not being able to enter the chimney. Rain and snow will also shy away!

MADE in EUROPE - this chimney cowl is produced in a CE certified factory under strict control over quality and production phases.