Feature(may vary by option.)

●High Quality Stainless Steel The roof smoke evacuator is made of high quality 304 stainless steel, molded in one piece without deformation, with smooth surface without sharp corners. Curved blade provides less wind resistance and smoother rotation.
●Galvanized Rollers: strong enough to withstand wind speed of 200km/h and 100kg load without deformation or damage.
●Easy Installation The air cap is shipped as a set, no need to assemble, it comes with mounting accessories, the vent does not need to be assembled, just remove and install it in the desired place.
●Connection size: 4.3 inches (110 mm), 6.3 inches (160 mm), 7.9 inches (200 mm), 9.8 inches (250 mm), 11.8 inches (300 mm), 15.7 inches (400 mm)
●Wide range of applications: for fireplaces, farms, factory roofs, ventilation ducts, warehouses, bathroom fans and exhaust fans, air conditioning units, kitchen fans and vents.

[4.3inch(110mm) Silver]

Description

Wind Turbine Vent Stainless Steel Wall Vent Kit Vent Cover Grille for Side Wall and Ceiling

Product Name: Turbine Fan
Material: Thickened 304 Stainless Steel
Product colour: silver.
Product specifications:110mm---400mm
Product features: no energy, high speed, high precision, high density, prevent rain and smoke returns.
Product principle: The use of natural wind and indoor temperature difference caused by thermal convection of air to promote turbine rotation so as to use centrifugal force and negative pressure effect will be inside not fresh air out.