Vent Cover, Exhaust Grille, Ventilator, Cap Vent Round, Wind, Exhaust Dryer Vent Cap, 304 Thick Stainless Steel Air Vent, Louvered Grille Cover Vent Hood, Venting Kit, for Ventilation and Ex

Wind Turbines Air Vents, Stainless Steel Wall Air Vent, Venting Kit, Vent Cover Grill for Sidewall and Ceiling Product Name: Ventilator Material: Thickened 304 stainless steel Product Color: Silver Product Specifications：110mm---400mm Product features: no energy power, high speed, high precision, high density, rain and smoke backflow prevention Product 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.

• Galvanized rollers: strong enough to withstand 200km/h wind speed and 100KG load without deformation or damage.
• High-quality stainless steel: the roof wind smoke evacuator is made of high-quality 304 stainless steel, one-piece molding without deformation, smooth surface without sharp corners. The curved wind blade has less wind resistance and smoother rotation.
• Connection Size:4.3inch(110mm), 6.3inch(160mm), 7.9inch(200mm), 9.8inch(250mm), 11.8inch(300mm), 15.7inch(400mm)
• Easy Installation:All the air cap is shipped as a whole, no need to assemble, comes with mounting accessories, the vent does not need to be assembled, just and install it to the desired location.
• 【Our services】you have any questions about our products, please send us an email, we will reply you within 24 hours and provide you with a satisfactory solution.