Wind Turbines Air Vents,Roof Ventilator Ventilator, Cap Vent Round, Dome Ventilator, Internally Braced Wind, DIY Easy Vent Hookup Kit, Connect Straight Duct with Flex Ducttilation(11.8inch)

Wind Turbines Air Vents, Flue Vent, DIY Easy Vent Hookup Kit, for Flats, Apartment, Home DecorProduct Name: VentilatorMaterial: Thickened 304 stainless steelProduct Color: SilverProduct Specifications：110mm---400mmProduct features: no energy power, high speed, high precision, high density, rain and smoke backflow preventionProduct Principle: The use of natural wind and indoor temperature difference caused by thermal convection air to promote the rotation of the so as to use the centrifugal force and the negative pressure effect will be indoor not fresh air out.

• Power Free Roof Ventilator: Turbo Ventilator utilizes the theory of natural wind and air convection to accelerate and convert parallel airflow into vertical airflow, thus improving indoor ventilation.
• Ventilation cap material: Roof wind ventilator is made of 304 stainless steel, which is thick, wear- and hard. It will not be deformed even if it is subjected to a weight of 100 kg. The galvanized rollers rotate flexibly and are durable and to pressure.
• Connection size:4.3inch, 6.3inch, 7.9inch, 9.8inch, 11.8inch, 15.7inch
• Easy Installation: All caps are shipped in one piece, no assembly required, comes with mounting accessories, the vent does not need to be assembled, just and install in the desired location.
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