Roof Vent Cap Attic Fan, 4" 12" 16" Wind Rotating Turbine Cap Vent, 304 Stainless Steel Turbine Ventilator Vents, Rotating Roof Vents Chimney Cowl(100mm/3.94in)

• Rotating turbine ventilator vents: Roof wind turbines cap vent is made of 304 thick stainless steel material, thick and wear-resistant, it will not deform even when bearing a weight of 100 kilograms; Galvanized rollers can rotate flexibly and have strong compressive performance
• Features: unpowered exhaust vent cover, zero energy consumption, zero noise, rain proof, rust proof, high hardness, long service life
• Indoor ventilation: Non powered rotating wind roof ventilators can be installed with rotating turbines in areas with poor air circulation on the roof. Equipped with a durable ball bearing base, it operates silently and quietly
• Easy installation: The exhaust cap roof flue vent is equipped with two types of installation accessories, namely clamps and 90 ° fixing feet. Small sized models can be installed with clamps to prevent gaps, while large-sized models can be fixed with 90 ° fixing feet
• Applicable scenarios: Roof wind ventilation fans are suitable for ventilation ducts, chimneys, farms, factory roofs, warehouses, and other places

Welcome to my shop Rotating chimney cover, rotating anti backflow cover, suitable for most standard chimney covers, has significant effects in windproof and improving ventilation. Protect your chimney from rain and moisture invasion  Product Specifications Product Name: Roof Ventilator Shape: Circular Material: 304 stainless steel Color: Silver Size: 75mm/2.95in , 100mm/3.94in , 110mm/4.33in , 150mm/5.9in , 160mm/6.3in , 200mm/7.87in , 250mm/9.84in , 300mm/11.81in , 350mm/13.78in , 400mm/15.75in , 450mm/17.72in Packaging: 1 * Turbo vent  Note: 1. Please confirm the size of the product used. Manual measurement may have an error of 1-3 centimeters, which is a normal phenomenon 2. Due to factors such as monitor brightness and ambient light, the actual color of the product may differ slightly from the images displayed on the website